/*
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// Generated by the protocol buffer compiler.  DO NOT EDIT!
// source: google/cloud/dialogflow/v2beta1/conversation.proto

package com.google.cloud.dialogflow.v2beta1;

/**
 *
 *
 * <pre>
 * Represents a conversation.
 * A conversation is an interaction between an agent, including live agents
 * and Dialogflow agents, and a support customer. Conversations can
 * include phone calls and text-based chat sessions.
 * </pre>
 *
 * Protobuf type {@code google.cloud.dialogflow.v2beta1.Conversation}
 */
public final class Conversation extends com.google.protobuf.GeneratedMessageV3
    implements
    // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2beta1.Conversation)
    ConversationOrBuilder {
  private static final long serialVersionUID = 0L;
  // Use Conversation.newBuilder() to construct.
  private Conversation(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
    super(builder);
  }

  private Conversation() {
    name_ = "";
    lifecycleState_ = 0;
    conversationProfile_ = "";
    conversationStage_ = 0;
  }

  @java.lang.Override
  @SuppressWarnings({"unused"})
  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
    return new Conversation();
  }

  @java.lang.Override
  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
    return this.unknownFields;
  }

  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    return com.google.cloud.dialogflow.v2beta1.ConversationProto
        .internal_static_google_cloud_dialogflow_v2beta1_Conversation_descriptor;
  }

  @java.lang.Override
  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
      internalGetFieldAccessorTable() {
    return com.google.cloud.dialogflow.v2beta1.ConversationProto
        .internal_static_google_cloud_dialogflow_v2beta1_Conversation_fieldAccessorTable
        .ensureFieldAccessorsInitialized(
            com.google.cloud.dialogflow.v2beta1.Conversation.class,
            com.google.cloud.dialogflow.v2beta1.Conversation.Builder.class);
  }

  /**
   *
   *
   * <pre>
   * Enumeration of the completion status of the conversation.
   * </pre>
   *
   * Protobuf enum {@code google.cloud.dialogflow.v2beta1.Conversation.LifecycleState}
   */
  public enum LifecycleState implements com.google.protobuf.ProtocolMessageEnum {
    /**
     *
     *
     * <pre>
     * Unknown.
     * </pre>
     *
     * <code>LIFECYCLE_STATE_UNSPECIFIED = 0;</code>
     */
    LIFECYCLE_STATE_UNSPECIFIED(0),
    /**
     *
     *
     * <pre>
     * Conversation is currently open for media analysis.
     * </pre>
     *
     * <code>IN_PROGRESS = 1;</code>
     */
    IN_PROGRESS(1),
    /**
     *
     *
     * <pre>
     * Conversation has been completed.
     * </pre>
     *
     * <code>COMPLETED = 2;</code>
     */
    COMPLETED(2),
    UNRECOGNIZED(-1),
    ;

    /**
     *
     *
     * <pre>
     * Unknown.
     * </pre>
     *
     * <code>LIFECYCLE_STATE_UNSPECIFIED = 0;</code>
     */
    public static final int LIFECYCLE_STATE_UNSPECIFIED_VALUE = 0;
    /**
     *
     *
     * <pre>
     * Conversation is currently open for media analysis.
     * </pre>
     *
     * <code>IN_PROGRESS = 1;</code>
     */
    public static final int IN_PROGRESS_VALUE = 1;
    /**
     *
     *
     * <pre>
     * Conversation has been completed.
     * </pre>
     *
     * <code>COMPLETED = 2;</code>
     */
    public static final int COMPLETED_VALUE = 2;

    public final int getNumber() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalArgumentException(
            "Can't get the number of an unknown enum value.");
      }
      return value;
    }

    /**
     * @param value The numeric wire value of the corresponding enum entry.
     * @return The enum associated with the given numeric wire value.
     * @deprecated Use {@link #forNumber(int)} instead.
     */
    @java.lang.Deprecated
    public static LifecycleState valueOf(int value) {
      return forNumber(value);
    }

    /**
     * @param value The numeric wire value of the corresponding enum entry.
     * @return The enum associated with the given numeric wire value.
     */
    public static LifecycleState forNumber(int value) {
      switch (value) {
        case 0:
          return LIFECYCLE_STATE_UNSPECIFIED;
        case 1:
          return IN_PROGRESS;
        case 2:
          return COMPLETED;
        default:
          return null;
      }
    }

    public static com.google.protobuf.Internal.EnumLiteMap<LifecycleState> internalGetValueMap() {
      return internalValueMap;
    }

    private static final com.google.protobuf.Internal.EnumLiteMap<LifecycleState> internalValueMap =
        new com.google.protobuf.Internal.EnumLiteMap<LifecycleState>() {
          public LifecycleState findValueByNumber(int number) {
            return LifecycleState.forNumber(number);
          }
        };

    public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalStateException(
            "Can't get the descriptor of an unrecognized enum value.");
      }
      return getDescriptor().getValues().get(ordinal());
    }

    public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType() {
      return getDescriptor();
    }

    public static final com.google.protobuf.Descriptors.EnumDescriptor getDescriptor() {
      return com.google.cloud.dialogflow.v2beta1.Conversation.getDescriptor().getEnumTypes().get(0);
    }

    private static final LifecycleState[] VALUES = values();

    public static LifecycleState valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
      if (desc.getType() != getDescriptor()) {
        throw new java.lang.IllegalArgumentException("EnumValueDescriptor is not for this type.");
      }
      if (desc.getIndex() == -1) {
        return UNRECOGNIZED;
      }
      return VALUES[desc.getIndex()];
    }

    private final int value;

    private LifecycleState(int value) {
      this.value = value;
    }

    // @@protoc_insertion_point(enum_scope:google.cloud.dialogflow.v2beta1.Conversation.LifecycleState)
  }

  /**
   *
   *
   * <pre>
   * Enumeration of the different conversation stages a conversation can be in.
   * Reference:
   * https://cloud.google.com/dialogflow/priv/docs/contact-center/basics#stages
   * </pre>
   *
   * Protobuf enum {@code google.cloud.dialogflow.v2beta1.Conversation.ConversationStage}
   */
  public enum ConversationStage implements com.google.protobuf.ProtocolMessageEnum {
    /**
     *
     *
     * <pre>
     * Unknown. Should never be used after a conversation is successfully
     * created.
     * </pre>
     *
     * <code>CONVERSATION_STAGE_UNSPECIFIED = 0;</code>
     */
    CONVERSATION_STAGE_UNSPECIFIED(0),
    /**
     *
     *
     * <pre>
     * The conversation should return virtual agent responses into the
     * conversation.
     * </pre>
     *
     * <code>VIRTUAL_AGENT_STAGE = 1;</code>
     */
    VIRTUAL_AGENT_STAGE(1),
    /**
     *
     *
     * <pre>
     * The conversation should not provide responses, just listen and provide
     * suggestions.
     * </pre>
     *
     * <code>HUMAN_ASSIST_STAGE = 2;</code>
     */
    HUMAN_ASSIST_STAGE(2),
    UNRECOGNIZED(-1),
    ;

    /**
     *
     *
     * <pre>
     * Unknown. Should never be used after a conversation is successfully
     * created.
     * </pre>
     *
     * <code>CONVERSATION_STAGE_UNSPECIFIED = 0;</code>
     */
    public static final int CONVERSATION_STAGE_UNSPECIFIED_VALUE = 0;
    /**
     *
     *
     * <pre>
     * The conversation should return virtual agent responses into the
     * conversation.
     * </pre>
     *
     * <code>VIRTUAL_AGENT_STAGE = 1;</code>
     */
    public static final int VIRTUAL_AGENT_STAGE_VALUE = 1;
    /**
     *
     *
     * <pre>
     * The conversation should not provide responses, just listen and provide
     * suggestions.
     * </pre>
     *
     * <code>HUMAN_ASSIST_STAGE = 2;</code>
     */
    public static final int HUMAN_ASSIST_STAGE_VALUE = 2;

    public final int getNumber() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalArgumentException(
            "Can't get the number of an unknown enum value.");
      }
      return value;
    }

    /**
     * @param value The numeric wire value of the corresponding enum entry.
     * @return The enum associated with the given numeric wire value.
     * @deprecated Use {@link #forNumber(int)} instead.
     */
    @java.lang.Deprecated
    public static ConversationStage valueOf(int value) {
      return forNumber(value);
    }

    /**
     * @param value The numeric wire value of the corresponding enum entry.
     * @return The enum associated with the given numeric wire value.
     */
    public static ConversationStage forNumber(int value) {
      switch (value) {
        case 0:
          return CONVERSATION_STAGE_UNSPECIFIED;
        case 1:
          return VIRTUAL_AGENT_STAGE;
        case 2:
          return HUMAN_ASSIST_STAGE;
        default:
          return null;
      }
    }

    public static com.google.protobuf.Internal.EnumLiteMap<ConversationStage>
        internalGetValueMap() {
      return internalValueMap;
    }

    private static final com.google.protobuf.Internal.EnumLiteMap<ConversationStage>
        internalValueMap =
            new com.google.protobuf.Internal.EnumLiteMap<ConversationStage>() {
              public ConversationStage findValueByNumber(int number) {
                return ConversationStage.forNumber(number);
              }
            };

    public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalStateException(
            "Can't get the descriptor of an unrecognized enum value.");
      }
      return getDescriptor().getValues().get(ordinal());
    }

    public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType() {
      return getDescriptor();
    }

    public static final com.google.protobuf.Descriptors.EnumDescriptor getDescriptor() {
      return com.google.cloud.dialogflow.v2beta1.Conversation.getDescriptor().getEnumTypes().get(1);
    }

    private static final ConversationStage[] VALUES = values();

    public static ConversationStage valueOf(
        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
      if (desc.getType() != getDescriptor()) {
        throw new java.lang.IllegalArgumentException("EnumValueDescriptor is not for this type.");
      }
      if (desc.getIndex() == -1) {
        return UNRECOGNIZED;
      }
      return VALUES[desc.getIndex()];
    }

    private final int value;

    private ConversationStage(int value) {
      this.value = value;
    }

    // @@protoc_insertion_point(enum_scope:google.cloud.dialogflow.v2beta1.Conversation.ConversationStage)
  }

  public static final int NAME_FIELD_NUMBER = 1;

  @SuppressWarnings("serial")
  private volatile java.lang.Object name_ = "";
  /**
   *
   *
   * <pre>
   * Output only. The unique identifier of this conversation.
   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
   * ID&gt;/conversations/&lt;Conversation ID&gt;`.
   * </pre>
   *
   * <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
   *
   * @return The name.
   */
  @java.lang.Override
  public java.lang.String getName() {
    java.lang.Object ref = name_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      name_ = s;
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * Output only. The unique identifier of this conversation.
   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
   * ID&gt;/conversations/&lt;Conversation ID&gt;`.
   * </pre>
   *
   * <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
   *
   * @return The bytes for name.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getNameBytes() {
    java.lang.Object ref = name_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      name_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int LIFECYCLE_STATE_FIELD_NUMBER = 2;
  private int lifecycleState_ = 0;
  /**
   *
   *
   * <pre>
   * Output only. The current state of the Conversation.
   * </pre>
   *
   * <code>
   * .google.cloud.dialogflow.v2beta1.Conversation.LifecycleState lifecycle_state = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return The enum numeric value on the wire for lifecycleState.
   */
  @java.lang.Override
  public int getLifecycleStateValue() {
    return lifecycleState_;
  }
  /**
   *
   *
   * <pre>
   * Output only. The current state of the Conversation.
   * </pre>
   *
   * <code>
   * .google.cloud.dialogflow.v2beta1.Conversation.LifecycleState lifecycle_state = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return The lifecycleState.
   */
  @java.lang.Override
  public com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState getLifecycleState() {
    com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState result =
        com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState.forNumber(lifecycleState_);
    return result == null
        ? com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState.UNRECOGNIZED
        : result;
  }

  public static final int CONVERSATION_PROFILE_FIELD_NUMBER = 3;

  @SuppressWarnings("serial")
  private volatile java.lang.Object conversationProfile_ = "";
  /**
   *
   *
   * <pre>
   * Required. The Conversation Profile to be used to configure this
   * Conversation. This field cannot be updated.
   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
   * ID&gt;/conversationProfiles/&lt;Conversation Profile ID&gt;`.
   * </pre>
   *
   * <code>
   * string conversation_profile = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
   * </code>
   *
   * @return The conversationProfile.
   */
  @java.lang.Override
  public java.lang.String getConversationProfile() {
    java.lang.Object ref = conversationProfile_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      conversationProfile_ = s;
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * Required. The Conversation Profile to be used to configure this
   * Conversation. This field cannot be updated.
   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
   * ID&gt;/conversationProfiles/&lt;Conversation Profile ID&gt;`.
   * </pre>
   *
   * <code>
   * string conversation_profile = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
   * </code>
   *
   * @return The bytes for conversationProfile.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getConversationProfileBytes() {
    java.lang.Object ref = conversationProfile_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      conversationProfile_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int PHONE_NUMBER_FIELD_NUMBER = 4;
  private com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phoneNumber_;
  /**
   *
   *
   * <pre>
   * Output only. Required if the conversation is to be connected over
   * telephony.
   * </pre>
   *
   * <code>
   * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return Whether the phoneNumber field is set.
   */
  @java.lang.Override
  public boolean hasPhoneNumber() {
    return phoneNumber_ != null;
  }
  /**
   *
   *
   * <pre>
   * Output only. Required if the conversation is to be connected over
   * telephony.
   * </pre>
   *
   * <code>
   * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return The phoneNumber.
   */
  @java.lang.Override
  public com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber getPhoneNumber() {
    return phoneNumber_ == null
        ? com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.getDefaultInstance()
        : phoneNumber_;
  }
  /**
   *
   *
   * <pre>
   * Output only. Required if the conversation is to be connected over
   * telephony.
   * </pre>
   *
   * <code>
   * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumberOrBuilder
      getPhoneNumberOrBuilder() {
    return phoneNumber_ == null
        ? com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.getDefaultInstance()
        : phoneNumber_;
  }

  public static final int CONVERSATION_STAGE_FIELD_NUMBER = 7;
  private int conversationStage_ = 0;
  /**
   *
   *
   * <pre>
   * The stage of a conversation. It indicates whether the virtual agent or a
   * human agent is handling the conversation.
   * If the conversation is created with the conversation profile that has
   * Dialogflow config set, defaults to
   * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE];
   * Otherwise, defaults to
   * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
   * If the conversation is created with the conversation profile that has
   * Dialogflow config set but explicitly sets conversation_stage to
   * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE],
   * it skips
   * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE]
   * stage and directly goes to
   * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
   * </pre>
   *
   * <code>.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage conversation_stage = 7;
   * </code>
   *
   * @return The enum numeric value on the wire for conversationStage.
   */
  @java.lang.Override
  public int getConversationStageValue() {
    return conversationStage_;
  }
  /**
   *
   *
   * <pre>
   * The stage of a conversation. It indicates whether the virtual agent or a
   * human agent is handling the conversation.
   * If the conversation is created with the conversation profile that has
   * Dialogflow config set, defaults to
   * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE];
   * Otherwise, defaults to
   * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
   * If the conversation is created with the conversation profile that has
   * Dialogflow config set but explicitly sets conversation_stage to
   * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE],
   * it skips
   * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE]
   * stage and directly goes to
   * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
   * </pre>
   *
   * <code>.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage conversation_stage = 7;
   * </code>
   *
   * @return The conversationStage.
   */
  @java.lang.Override
  public com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage getConversationStage() {
    com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage result =
        com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.forNumber(
            conversationStage_);
    return result == null
        ? com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.UNRECOGNIZED
        : result;
  }

  public static final int START_TIME_FIELD_NUMBER = 5;
  private com.google.protobuf.Timestamp startTime_;
  /**
   *
   *
   * <pre>
   * Output only. The time the conversation was started.
   * </pre>
   *
   * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return Whether the startTime field is set.
   */
  @java.lang.Override
  public boolean hasStartTime() {
    return startTime_ != null;
  }
  /**
   *
   *
   * <pre>
   * Output only. The time the conversation was started.
   * </pre>
   *
   * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return The startTime.
   */
  @java.lang.Override
  public com.google.protobuf.Timestamp getStartTime() {
    return startTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : startTime_;
  }
  /**
   *
   *
   * <pre>
   * Output only. The time the conversation was started.
   * </pre>
   *
   * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
    return startTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : startTime_;
  }

  public static final int END_TIME_FIELD_NUMBER = 6;
  private com.google.protobuf.Timestamp endTime_;
  /**
   *
   *
   * <pre>
   * Output only. The time the conversation was finished.
   * </pre>
   *
   * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return Whether the endTime field is set.
   */
  @java.lang.Override
  public boolean hasEndTime() {
    return endTime_ != null;
  }
  /**
   *
   *
   * <pre>
   * Output only. The time the conversation was finished.
   * </pre>
   *
   * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   *
   * @return The endTime.
   */
  @java.lang.Override
  public com.google.protobuf.Timestamp getEndTime() {
    return endTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : endTime_;
  }
  /**
   *
   *
   * <pre>
   * Output only. The time the conversation was finished.
   * </pre>
   *
   * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public com.google.protobuf.TimestampOrBuilder getEndTimeOrBuilder() {
    return endTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : endTime_;
  }

  private byte memoizedIsInitialized = -1;

  @java.lang.Override
  public final boolean isInitialized() {
    byte isInitialized = memoizedIsInitialized;
    if (isInitialized == 1) return true;
    if (isInitialized == 0) return false;

    memoizedIsInitialized = 1;
    return true;
  }

  @java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
    }
    if (lifecycleState_
        != com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState
            .LIFECYCLE_STATE_UNSPECIFIED
            .getNumber()) {
      output.writeEnum(2, lifecycleState_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(conversationProfile_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, conversationProfile_);
    }
    if (phoneNumber_ != null) {
      output.writeMessage(4, getPhoneNumber());
    }
    if (startTime_ != null) {
      output.writeMessage(5, getStartTime());
    }
    if (endTime_ != null) {
      output.writeMessage(6, getEndTime());
    }
    if (conversationStage_
        != com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage
            .CONVERSATION_STAGE_UNSPECIFIED
            .getNumber()) {
      output.writeEnum(7, conversationStage_);
    }
    getUnknownFields().writeTo(output);
  }

  @java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
    }
    if (lifecycleState_
        != com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState
            .LIFECYCLE_STATE_UNSPECIFIED
            .getNumber()) {
      size += com.google.protobuf.CodedOutputStream.computeEnumSize(2, lifecycleState_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(conversationProfile_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, conversationProfile_);
    }
    if (phoneNumber_ != null) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getPhoneNumber());
    }
    if (startTime_ != null) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(5, getStartTime());
    }
    if (endTime_ != null) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(6, getEndTime());
    }
    if (conversationStage_
        != com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage
            .CONVERSATION_STAGE_UNSPECIFIED
            .getNumber()) {
      size += com.google.protobuf.CodedOutputStream.computeEnumSize(7, conversationStage_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }

  @java.lang.Override
  public boolean equals(final java.lang.Object obj) {
    if (obj == this) {
      return true;
    }
    if (!(obj instanceof com.google.cloud.dialogflow.v2beta1.Conversation)) {
      return super.equals(obj);
    }
    com.google.cloud.dialogflow.v2beta1.Conversation other =
        (com.google.cloud.dialogflow.v2beta1.Conversation) obj;

    if (!getName().equals(other.getName())) return false;
    if (lifecycleState_ != other.lifecycleState_) return false;
    if (!getConversationProfile().equals(other.getConversationProfile())) return false;
    if (hasPhoneNumber() != other.hasPhoneNumber()) return false;
    if (hasPhoneNumber()) {
      if (!getPhoneNumber().equals(other.getPhoneNumber())) return false;
    }
    if (conversationStage_ != other.conversationStage_) return false;
    if (hasStartTime() != other.hasStartTime()) return false;
    if (hasStartTime()) {
      if (!getStartTime().equals(other.getStartTime())) return false;
    }
    if (hasEndTime() != other.hasEndTime()) return false;
    if (hasEndTime()) {
      if (!getEndTime().equals(other.getEndTime())) return false;
    }
    if (!getUnknownFields().equals(other.getUnknownFields())) return false;
    return true;
  }

  @java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
      return memoizedHashCode;
    }
    int hash = 41;
    hash = (19 * hash) + getDescriptor().hashCode();
    hash = (37 * hash) + NAME_FIELD_NUMBER;
    hash = (53 * hash) + getName().hashCode();
    hash = (37 * hash) + LIFECYCLE_STATE_FIELD_NUMBER;
    hash = (53 * hash) + lifecycleState_;
    hash = (37 * hash) + CONVERSATION_PROFILE_FIELD_NUMBER;
    hash = (53 * hash) + getConversationProfile().hashCode();
    if (hasPhoneNumber()) {
      hash = (37 * hash) + PHONE_NUMBER_FIELD_NUMBER;
      hash = (53 * hash) + getPhoneNumber().hashCode();
    }
    hash = (37 * hash) + CONVERSATION_STAGE_FIELD_NUMBER;
    hash = (53 * hash) + conversationStage_;
    if (hasStartTime()) {
      hash = (37 * hash) + START_TIME_FIELD_NUMBER;
      hash = (53 * hash) + getStartTime().hashCode();
    }
    if (hasEndTime()) {
      hash = (37 * hash) + END_TIME_FIELD_NUMBER;
      hash = (53 * hash) + getEndTime().hashCode();
    }
    hash = (29 * hash) + getUnknownFields().hashCode();
    memoizedHashCode = hash;
    return hash;
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(java.nio.ByteBuffer data)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      com.google.protobuf.ByteString data)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      com.google.protobuf.ByteString data,
      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(byte[] data)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      java.io.InputStream input) throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
        PARSER, input, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseDelimitedFrom(
      java.io.InputStream input) throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseDelimitedFrom(
      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
        PARSER, input, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation parseFrom(
      com.google.protobuf.CodedInputStream input,
      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
        PARSER, input, extensionRegistry);
  }

  @java.lang.Override
  public Builder newBuilderForType() {
    return newBuilder();
  }

  public static Builder newBuilder() {
    return DEFAULT_INSTANCE.toBuilder();
  }

  public static Builder newBuilder(com.google.cloud.dialogflow.v2beta1.Conversation prototype) {
    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
  }

  @java.lang.Override
  public Builder toBuilder() {
    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
  }

  @java.lang.Override
  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
    Builder builder = new Builder(parent);
    return builder;
  }
  /**
   *
   *
   * <pre>
   * Represents a conversation.
   * A conversation is an interaction between an agent, including live agents
   * and Dialogflow agents, and a support customer. Conversations can
   * include phone calls and text-based chat sessions.
   * </pre>
   *
   * Protobuf type {@code google.cloud.dialogflow.v2beta1.Conversation}
   */
  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
      implements
      // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2beta1.Conversation)
      com.google.cloud.dialogflow.v2beta1.ConversationOrBuilder {
    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
      return com.google.cloud.dialogflow.v2beta1.ConversationProto
          .internal_static_google_cloud_dialogflow_v2beta1_Conversation_descriptor;
    }

    @java.lang.Override
    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
        internalGetFieldAccessorTable() {
      return com.google.cloud.dialogflow.v2beta1.ConversationProto
          .internal_static_google_cloud_dialogflow_v2beta1_Conversation_fieldAccessorTable
          .ensureFieldAccessorsInitialized(
              com.google.cloud.dialogflow.v2beta1.Conversation.class,
              com.google.cloud.dialogflow.v2beta1.Conversation.Builder.class);
    }

    // Construct using com.google.cloud.dialogflow.v2beta1.Conversation.newBuilder()
    private Builder() {}

    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
      super(parent);
    }

    @java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      name_ = "";
      lifecycleState_ = 0;
      conversationProfile_ = "";
      phoneNumber_ = null;
      if (phoneNumberBuilder_ != null) {
        phoneNumberBuilder_.dispose();
        phoneNumberBuilder_ = null;
      }
      conversationStage_ = 0;
      startTime_ = null;
      if (startTimeBuilder_ != null) {
        startTimeBuilder_.dispose();
        startTimeBuilder_ = null;
      }
      endTime_ = null;
      if (endTimeBuilder_ != null) {
        endTimeBuilder_.dispose();
        endTimeBuilder_ = null;
      }
      return this;
    }

    @java.lang.Override
    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
      return com.google.cloud.dialogflow.v2beta1.ConversationProto
          .internal_static_google_cloud_dialogflow_v2beta1_Conversation_descriptor;
    }

    @java.lang.Override
    public com.google.cloud.dialogflow.v2beta1.Conversation getDefaultInstanceForType() {
      return com.google.cloud.dialogflow.v2beta1.Conversation.getDefaultInstance();
    }

    @java.lang.Override
    public com.google.cloud.dialogflow.v2beta1.Conversation build() {
      com.google.cloud.dialogflow.v2beta1.Conversation result = buildPartial();
      if (!result.isInitialized()) {
        throw newUninitializedMessageException(result);
      }
      return result;
    }

    @java.lang.Override
    public com.google.cloud.dialogflow.v2beta1.Conversation buildPartial() {
      com.google.cloud.dialogflow.v2beta1.Conversation result =
          new com.google.cloud.dialogflow.v2beta1.Conversation(this);
      if (bitField0_ != 0) {
        buildPartial0(result);
      }
      onBuilt();
      return result;
    }

    private void buildPartial0(com.google.cloud.dialogflow.v2beta1.Conversation result) {
      int from_bitField0_ = bitField0_;
      if (((from_bitField0_ & 0x00000001) != 0)) {
        result.name_ = name_;
      }
      if (((from_bitField0_ & 0x00000002) != 0)) {
        result.lifecycleState_ = lifecycleState_;
      }
      if (((from_bitField0_ & 0x00000004) != 0)) {
        result.conversationProfile_ = conversationProfile_;
      }
      if (((from_bitField0_ & 0x00000008) != 0)) {
        result.phoneNumber_ =
            phoneNumberBuilder_ == null ? phoneNumber_ : phoneNumberBuilder_.build();
      }
      if (((from_bitField0_ & 0x00000010) != 0)) {
        result.conversationStage_ = conversationStage_;
      }
      if (((from_bitField0_ & 0x00000020) != 0)) {
        result.startTime_ = startTimeBuilder_ == null ? startTime_ : startTimeBuilder_.build();
      }
      if (((from_bitField0_ & 0x00000040) != 0)) {
        result.endTime_ = endTimeBuilder_ == null ? endTime_ : endTimeBuilder_.build();
      }
    }

    @java.lang.Override
    public Builder clone() {
      return super.clone();
    }

    @java.lang.Override
    public Builder setField(
        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
      return super.setField(field, value);
    }

    @java.lang.Override
    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
      return super.clearField(field);
    }

    @java.lang.Override
    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
      return super.clearOneof(oneof);
    }

    @java.lang.Override
    public Builder setRepeatedField(
        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
      return super.setRepeatedField(field, index, value);
    }

    @java.lang.Override
    public Builder addRepeatedField(
        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
      return super.addRepeatedField(field, value);
    }

    @java.lang.Override
    public Builder mergeFrom(com.google.protobuf.Message other) {
      if (other instanceof com.google.cloud.dialogflow.v2beta1.Conversation) {
        return mergeFrom((com.google.cloud.dialogflow.v2beta1.Conversation) other);
      } else {
        super.mergeFrom(other);
        return this;
      }
    }

    public Builder mergeFrom(com.google.cloud.dialogflow.v2beta1.Conversation other) {
      if (other == com.google.cloud.dialogflow.v2beta1.Conversation.getDefaultInstance())
        return this;
      if (!other.getName().isEmpty()) {
        name_ = other.name_;
        bitField0_ |= 0x00000001;
        onChanged();
      }
      if (other.lifecycleState_ != 0) {
        setLifecycleStateValue(other.getLifecycleStateValue());
      }
      if (!other.getConversationProfile().isEmpty()) {
        conversationProfile_ = other.conversationProfile_;
        bitField0_ |= 0x00000004;
        onChanged();
      }
      if (other.hasPhoneNumber()) {
        mergePhoneNumber(other.getPhoneNumber());
      }
      if (other.conversationStage_ != 0) {
        setConversationStageValue(other.getConversationStageValue());
      }
      if (other.hasStartTime()) {
        mergeStartTime(other.getStartTime());
      }
      if (other.hasEndTime()) {
        mergeEndTime(other.getEndTime());
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }

    @java.lang.Override
    public final boolean isInitialized() {
      return true;
    }

    @java.lang.Override
    public Builder mergeFrom(
        com.google.protobuf.CodedInputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      if (extensionRegistry == null) {
        throw new java.lang.NullPointerException();
      }
      try {
        boolean done = false;
        while (!done) {
          int tag = input.readTag();
          switch (tag) {
            case 0:
              done = true;
              break;
            case 10:
              {
                name_ = input.readStringRequireUtf8();
                bitField0_ |= 0x00000001;
                break;
              } // case 10
            case 16:
              {
                lifecycleState_ = input.readEnum();
                bitField0_ |= 0x00000002;
                break;
              } // case 16
            case 26:
              {
                conversationProfile_ = input.readStringRequireUtf8();
                bitField0_ |= 0x00000004;
                break;
              } // case 26
            case 34:
              {
                input.readMessage(getPhoneNumberFieldBuilder().getBuilder(), extensionRegistry);
                bitField0_ |= 0x00000008;
                break;
              } // case 34
            case 42:
              {
                input.readMessage(getStartTimeFieldBuilder().getBuilder(), extensionRegistry);
                bitField0_ |= 0x00000020;
                break;
              } // case 42
            case 50:
              {
                input.readMessage(getEndTimeFieldBuilder().getBuilder(), extensionRegistry);
                bitField0_ |= 0x00000040;
                break;
              } // case 50
            case 56:
              {
                conversationStage_ = input.readEnum();
                bitField0_ |= 0x00000010;
                break;
              } // case 56
            default:
              {
                if (!super.parseUnknownField(input, extensionRegistry, tag)) {
                  done = true; // was an endgroup tag
                }
                break;
              } // default:
          } // switch (tag)
        } // while (!done)
      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
        throw e.unwrapIOException();
      } finally {
        onChanged();
      } // finally
      return this;
    }

    private int bitField0_;

    private java.lang.Object name_ = "";
    /**
     *
     *
     * <pre>
     * Output only. The unique identifier of this conversation.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversations/&lt;Conversation ID&gt;`.
     * </pre>
     *
     * <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return The name.
     */
    public java.lang.String getName() {
      java.lang.Object ref = name_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        name_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The unique identifier of this conversation.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversations/&lt;Conversation ID&gt;`.
     * </pre>
     *
     * <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return The bytes for name.
     */
    public com.google.protobuf.ByteString getNameBytes() {
      java.lang.Object ref = name_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        name_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The unique identifier of this conversation.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversations/&lt;Conversation ID&gt;`.
     * </pre>
     *
     * <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @param value The name to set.
     * @return This builder for chaining.
     */
    public Builder setName(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      name_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The unique identifier of this conversation.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversations/&lt;Conversation ID&gt;`.
     * </pre>
     *
     * <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearName() {
      name_ = getDefaultInstance().getName();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The unique identifier of this conversation.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversations/&lt;Conversation ID&gt;`.
     * </pre>
     *
     * <code>string name = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @param value The bytes for name to set.
     * @return This builder for chaining.
     */
    public Builder setNameBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      name_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }

    private int lifecycleState_ = 0;
    /**
     *
     *
     * <pre>
     * Output only. The current state of the Conversation.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.Conversation.LifecycleState lifecycle_state = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return The enum numeric value on the wire for lifecycleState.
     */
    @java.lang.Override
    public int getLifecycleStateValue() {
      return lifecycleState_;
    }
    /**
     *
     *
     * <pre>
     * Output only. The current state of the Conversation.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.Conversation.LifecycleState lifecycle_state = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @param value The enum numeric value on the wire for lifecycleState to set.
     * @return This builder for chaining.
     */
    public Builder setLifecycleStateValue(int value) {
      lifecycleState_ = value;
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The current state of the Conversation.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.Conversation.LifecycleState lifecycle_state = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return The lifecycleState.
     */
    @java.lang.Override
    public com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState getLifecycleState() {
      com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState result =
          com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState.forNumber(
              lifecycleState_);
      return result == null
          ? com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState.UNRECOGNIZED
          : result;
    }
    /**
     *
     *
     * <pre>
     * Output only. The current state of the Conversation.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.Conversation.LifecycleState lifecycle_state = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @param value The lifecycleState to set.
     * @return This builder for chaining.
     */
    public Builder setLifecycleState(
        com.google.cloud.dialogflow.v2beta1.Conversation.LifecycleState value) {
      if (value == null) {
        throw new NullPointerException();
      }
      bitField0_ |= 0x00000002;
      lifecycleState_ = value.getNumber();
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The current state of the Conversation.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.Conversation.LifecycleState lifecycle_state = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return This builder for chaining.
     */
    public Builder clearLifecycleState() {
      bitField0_ = (bitField0_ & ~0x00000002);
      lifecycleState_ = 0;
      onChanged();
      return this;
    }

    private java.lang.Object conversationProfile_ = "";
    /**
     *
     *
     * <pre>
     * Required. The Conversation Profile to be used to configure this
     * Conversation. This field cannot be updated.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversationProfiles/&lt;Conversation Profile ID&gt;`.
     * </pre>
     *
     * <code>
     * string conversation_profile = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
     * </code>
     *
     * @return The conversationProfile.
     */
    public java.lang.String getConversationProfile() {
      java.lang.Object ref = conversationProfile_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        conversationProfile_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Required. The Conversation Profile to be used to configure this
     * Conversation. This field cannot be updated.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversationProfiles/&lt;Conversation Profile ID&gt;`.
     * </pre>
     *
     * <code>
     * string conversation_profile = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
     * </code>
     *
     * @return The bytes for conversationProfile.
     */
    public com.google.protobuf.ByteString getConversationProfileBytes() {
      java.lang.Object ref = conversationProfile_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        conversationProfile_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Required. The Conversation Profile to be used to configure this
     * Conversation. This field cannot be updated.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversationProfiles/&lt;Conversation Profile ID&gt;`.
     * </pre>
     *
     * <code>
     * string conversation_profile = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
     * </code>
     *
     * @param value The conversationProfile to set.
     * @return This builder for chaining.
     */
    public Builder setConversationProfile(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      conversationProfile_ = value;
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Required. The Conversation Profile to be used to configure this
     * Conversation. This field cannot be updated.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversationProfiles/&lt;Conversation Profile ID&gt;`.
     * </pre>
     *
     * <code>
     * string conversation_profile = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
     * </code>
     *
     * @return This builder for chaining.
     */
    public Builder clearConversationProfile() {
      conversationProfile_ = getDefaultInstance().getConversationProfile();
      bitField0_ = (bitField0_ & ~0x00000004);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Required. The Conversation Profile to be used to configure this
     * Conversation. This field cannot be updated.
     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
     * ID&gt;/conversationProfiles/&lt;Conversation Profile ID&gt;`.
     * </pre>
     *
     * <code>
     * string conversation_profile = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
     * </code>
     *
     * @param value The bytes for conversationProfile to set.
     * @return This builder for chaining.
     */
    public Builder setConversationProfileBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      conversationProfile_ = value;
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }

    private com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phoneNumber_;
    private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber,
            com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.Builder,
            com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumberOrBuilder>
        phoneNumberBuilder_;
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return Whether the phoneNumber field is set.
     */
    public boolean hasPhoneNumber() {
      return ((bitField0_ & 0x00000008) != 0);
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return The phoneNumber.
     */
    public com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber getPhoneNumber() {
      if (phoneNumberBuilder_ == null) {
        return phoneNumber_ == null
            ? com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.getDefaultInstance()
            : phoneNumber_;
      } else {
        return phoneNumberBuilder_.getMessage();
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setPhoneNumber(
        com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber value) {
      if (phoneNumberBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        phoneNumber_ = value;
      } else {
        phoneNumberBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setPhoneNumber(
        com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.Builder builderForValue) {
      if (phoneNumberBuilder_ == null) {
        phoneNumber_ = builderForValue.build();
      } else {
        phoneNumberBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder mergePhoneNumber(
        com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber value) {
      if (phoneNumberBuilder_ == null) {
        if (((bitField0_ & 0x00000008) != 0)
            && phoneNumber_ != null
            && phoneNumber_
                != com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber
                    .getDefaultInstance()) {
          getPhoneNumberBuilder().mergeFrom(value);
        } else {
          phoneNumber_ = value;
        }
      } else {
        phoneNumberBuilder_.mergeFrom(value);
      }
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder clearPhoneNumber() {
      bitField0_ = (bitField0_ & ~0x00000008);
      phoneNumber_ = null;
      if (phoneNumberBuilder_ != null) {
        phoneNumberBuilder_.dispose();
        phoneNumberBuilder_ = null;
      }
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.Builder
        getPhoneNumberBuilder() {
      bitField0_ |= 0x00000008;
      onChanged();
      return getPhoneNumberFieldBuilder().getBuilder();
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumberOrBuilder
        getPhoneNumberOrBuilder() {
      if (phoneNumberBuilder_ != null) {
        return phoneNumberBuilder_.getMessageOrBuilder();
      } else {
        return phoneNumber_ == null
            ? com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.getDefaultInstance()
            : phoneNumber_;
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. Required if the conversation is to be connected over
     * telephony.
     * </pre>
     *
     * <code>
     * .google.cloud.dialogflow.v2beta1.ConversationPhoneNumber phone_number = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber,
            com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.Builder,
            com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumberOrBuilder>
        getPhoneNumberFieldBuilder() {
      if (phoneNumberBuilder_ == null) {
        phoneNumberBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber,
                com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumber.Builder,
                com.google.cloud.dialogflow.v2beta1.ConversationPhoneNumberOrBuilder>(
                getPhoneNumber(), getParentForChildren(), isClean());
        phoneNumber_ = null;
      }
      return phoneNumberBuilder_;
    }

    private int conversationStage_ = 0;
    /**
     *
     *
     * <pre>
     * The stage of a conversation. It indicates whether the virtual agent or a
     * human agent is handling the conversation.
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set, defaults to
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE];
     * Otherwise, defaults to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set but explicitly sets conversation_stage to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE],
     * it skips
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE]
     * stage and directly goes to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * </pre>
     *
     * <code>.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage conversation_stage = 7;
     * </code>
     *
     * @return The enum numeric value on the wire for conversationStage.
     */
    @java.lang.Override
    public int getConversationStageValue() {
      return conversationStage_;
    }
    /**
     *
     *
     * <pre>
     * The stage of a conversation. It indicates whether the virtual agent or a
     * human agent is handling the conversation.
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set, defaults to
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE];
     * Otherwise, defaults to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set but explicitly sets conversation_stage to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE],
     * it skips
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE]
     * stage and directly goes to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * </pre>
     *
     * <code>.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage conversation_stage = 7;
     * </code>
     *
     * @param value The enum numeric value on the wire for conversationStage to set.
     * @return This builder for chaining.
     */
    public Builder setConversationStageValue(int value) {
      conversationStage_ = value;
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The stage of a conversation. It indicates whether the virtual agent or a
     * human agent is handling the conversation.
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set, defaults to
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE];
     * Otherwise, defaults to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set but explicitly sets conversation_stage to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE],
     * it skips
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE]
     * stage and directly goes to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * </pre>
     *
     * <code>.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage conversation_stage = 7;
     * </code>
     *
     * @return The conversationStage.
     */
    @java.lang.Override
    public com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage
        getConversationStage() {
      com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage result =
          com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.forNumber(
              conversationStage_);
      return result == null
          ? com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.UNRECOGNIZED
          : result;
    }
    /**
     *
     *
     * <pre>
     * The stage of a conversation. It indicates whether the virtual agent or a
     * human agent is handling the conversation.
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set, defaults to
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE];
     * Otherwise, defaults to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set but explicitly sets conversation_stage to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE],
     * it skips
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE]
     * stage and directly goes to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * </pre>
     *
     * <code>.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage conversation_stage = 7;
     * </code>
     *
     * @param value The conversationStage to set.
     * @return This builder for chaining.
     */
    public Builder setConversationStage(
        com.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage value) {
      if (value == null) {
        throw new NullPointerException();
      }
      bitField0_ |= 0x00000010;
      conversationStage_ = value.getNumber();
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The stage of a conversation. It indicates whether the virtual agent or a
     * human agent is handling the conversation.
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set, defaults to
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE];
     * Otherwise, defaults to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * If the conversation is created with the conversation profile that has
     * Dialogflow config set but explicitly sets conversation_stage to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE],
     * it skips
     * [ConversationStage.VIRTUAL_AGENT_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.VIRTUAL_AGENT_STAGE]
     * stage and directly goes to
     * [ConversationStage.HUMAN_ASSIST_STAGE][google.cloud.dialogflow.v2beta1.Conversation.ConversationStage.HUMAN_ASSIST_STAGE].
     * </pre>
     *
     * <code>.google.cloud.dialogflow.v2beta1.Conversation.ConversationStage conversation_stage = 7;
     * </code>
     *
     * @return This builder for chaining.
     */
    public Builder clearConversationStage() {
      bitField0_ = (bitField0_ & ~0x00000010);
      conversationStage_ = 0;
      onChanged();
      return this;
    }

    private com.google.protobuf.Timestamp startTime_;
    private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Timestamp,
            com.google.protobuf.Timestamp.Builder,
            com.google.protobuf.TimestampOrBuilder>
        startTimeBuilder_;
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return Whether the startTime field is set.
     */
    public boolean hasStartTime() {
      return ((bitField0_ & 0x00000020) != 0);
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return The startTime.
     */
    public com.google.protobuf.Timestamp getStartTime() {
      if (startTimeBuilder_ == null) {
        return startTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : startTime_;
      } else {
        return startTimeBuilder_.getMessage();
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setStartTime(com.google.protobuf.Timestamp value) {
      if (startTimeBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        startTime_ = value;
      } else {
        startTimeBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setStartTime(com.google.protobuf.Timestamp.Builder builderForValue) {
      if (startTimeBuilder_ == null) {
        startTime_ = builderForValue.build();
      } else {
        startTimeBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder mergeStartTime(com.google.protobuf.Timestamp value) {
      if (startTimeBuilder_ == null) {
        if (((bitField0_ & 0x00000020) != 0)
            && startTime_ != null
            && startTime_ != com.google.protobuf.Timestamp.getDefaultInstance()) {
          getStartTimeBuilder().mergeFrom(value);
        } else {
          startTime_ = value;
        }
      } else {
        startTimeBuilder_.mergeFrom(value);
      }
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder clearStartTime() {
      bitField0_ = (bitField0_ & ~0x00000020);
      startTime_ = null;
      if (startTimeBuilder_ != null) {
        startTimeBuilder_.dispose();
        startTimeBuilder_ = null;
      }
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.protobuf.Timestamp.Builder getStartTimeBuilder() {
      bitField0_ |= 0x00000020;
      onChanged();
      return getStartTimeFieldBuilder().getBuilder();
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
      if (startTimeBuilder_ != null) {
        return startTimeBuilder_.getMessageOrBuilder();
      } else {
        return startTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : startTime_;
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was started.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp start_time = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Timestamp,
            com.google.protobuf.Timestamp.Builder,
            com.google.protobuf.TimestampOrBuilder>
        getStartTimeFieldBuilder() {
      if (startTimeBuilder_ == null) {
        startTimeBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.protobuf.Timestamp,
                com.google.protobuf.Timestamp.Builder,
                com.google.protobuf.TimestampOrBuilder>(
                getStartTime(), getParentForChildren(), isClean());
        startTime_ = null;
      }
      return startTimeBuilder_;
    }

    private com.google.protobuf.Timestamp endTime_;
    private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Timestamp,
            com.google.protobuf.Timestamp.Builder,
            com.google.protobuf.TimestampOrBuilder>
        endTimeBuilder_;
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return Whether the endTime field is set.
     */
    public boolean hasEndTime() {
      return ((bitField0_ & 0x00000040) != 0);
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     *
     * @return The endTime.
     */
    public com.google.protobuf.Timestamp getEndTime() {
      if (endTimeBuilder_ == null) {
        return endTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : endTime_;
      } else {
        return endTimeBuilder_.getMessage();
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setEndTime(com.google.protobuf.Timestamp value) {
      if (endTimeBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        endTime_ = value;
      } else {
        endTimeBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000040;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setEndTime(com.google.protobuf.Timestamp.Builder builderForValue) {
      if (endTimeBuilder_ == null) {
        endTime_ = builderForValue.build();
      } else {
        endTimeBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000040;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder mergeEndTime(com.google.protobuf.Timestamp value) {
      if (endTimeBuilder_ == null) {
        if (((bitField0_ & 0x00000040) != 0)
            && endTime_ != null
            && endTime_ != com.google.protobuf.Timestamp.getDefaultInstance()) {
          getEndTimeBuilder().mergeFrom(value);
        } else {
          endTime_ = value;
        }
      } else {
        endTimeBuilder_.mergeFrom(value);
      }
      bitField0_ |= 0x00000040;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder clearEndTime() {
      bitField0_ = (bitField0_ & ~0x00000040);
      endTime_ = null;
      if (endTimeBuilder_ != null) {
        endTimeBuilder_.dispose();
        endTimeBuilder_ = null;
      }
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.protobuf.Timestamp.Builder getEndTimeBuilder() {
      bitField0_ |= 0x00000040;
      onChanged();
      return getEndTimeFieldBuilder().getBuilder();
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.protobuf.TimestampOrBuilder getEndTimeOrBuilder() {
      if (endTimeBuilder_ != null) {
        return endTimeBuilder_.getMessageOrBuilder();
      } else {
        return endTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : endTime_;
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The time the conversation was finished.
     * </pre>
     *
     * <code>.google.protobuf.Timestamp end_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Timestamp,
            com.google.protobuf.Timestamp.Builder,
            com.google.protobuf.TimestampOrBuilder>
        getEndTimeFieldBuilder() {
      if (endTimeBuilder_ == null) {
        endTimeBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.protobuf.Timestamp,
                com.google.protobuf.Timestamp.Builder,
                com.google.protobuf.TimestampOrBuilder>(
                getEndTime(), getParentForChildren(), isClean());
        endTime_ = null;
      }
      return endTimeBuilder_;
    }

    @java.lang.Override
    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.setUnknownFields(unknownFields);
    }

    @java.lang.Override
    public final Builder mergeUnknownFields(
        final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.mergeUnknownFields(unknownFields);
    }

    // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.Conversation)
  }

  // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.Conversation)
  private static final com.google.cloud.dialogflow.v2beta1.Conversation DEFAULT_INSTANCE;

  static {
    DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2beta1.Conversation();
  }

  public static com.google.cloud.dialogflow.v2beta1.Conversation getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }

  private static final com.google.protobuf.Parser<Conversation> PARSER =
      new com.google.protobuf.AbstractParser<Conversation>() {
        @java.lang.Override
        public Conversation parsePartialFrom(
            com.google.protobuf.CodedInputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
          Builder builder = newBuilder();
          try {
            builder.mergeFrom(input, extensionRegistry);
          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
            throw e.setUnfinishedMessage(builder.buildPartial());
          } catch (com.google.protobuf.UninitializedMessageException e) {
            throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
          } catch (java.io.IOException e) {
            throw new com.google.protobuf.InvalidProtocolBufferException(e)
                .setUnfinishedMessage(builder.buildPartial());
          }
          return builder.buildPartial();
        }
      };

  public static com.google.protobuf.Parser<Conversation> parser() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.protobuf.Parser<Conversation> getParserForType() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.cloud.dialogflow.v2beta1.Conversation getDefaultInstanceForType() {
    return DEFAULT_INSTANCE;
  }
}