/*
 * 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/language/v1/language_service.proto

package com.google.cloud.language.v1;

/**
 *
 *
 * <pre>
 * Represents the input to API methods.
 * </pre>
 *
 * Protobuf type {@code google.cloud.language.v1.Document}
 */
public final class Document extends com.google.protobuf.GeneratedMessageV3
    implements
    // @@protoc_insertion_point(message_implements:google.cloud.language.v1.Document)
    DocumentOrBuilder {
  private static final long serialVersionUID = 0L;
  // Use Document.newBuilder() to construct.
  private Document(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
    super(builder);
  }

  private Document() {
    type_ = 0;
    language_ = "";
  }

  @java.lang.Override
  @SuppressWarnings({"unused"})
  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
    return new Document();
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  @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.language.v1.LanguageServiceProto
        .internal_static_google_cloud_language_v1_Document_descriptor;
  }

  @java.lang.Override
  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
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        .ensureFieldAccessorsInitialized(
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            com.google.cloud.language.v1.Document.Builder.class);
  }

  /**
   *
   *
   * <pre>
   * The document types enum.
   * </pre>
   *
   * Protobuf enum {@code google.cloud.language.v1.Document.Type}
   */
  public enum Type implements com.google.protobuf.ProtocolMessageEnum {
    /**
     *
     *
     * <pre>
     * The content type is not specified.
     * </pre>
     *
     * <code>TYPE_UNSPECIFIED = 0;</code>
     */
    TYPE_UNSPECIFIED(0),
    /**
     *
     *
     * <pre>
     * Plain text
     * </pre>
     *
     * <code>PLAIN_TEXT = 1;</code>
     */
    PLAIN_TEXT(1),
    /**
     *
     *
     * <pre>
     * HTML
     * </pre>
     *
     * <code>HTML = 2;</code>
     */
    HTML(2),
    UNRECOGNIZED(-1),
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    /**
     *
     *
     * <pre>
     * The content type is not specified.
     * </pre>
     *
     * <code>TYPE_UNSPECIFIED = 0;</code>
     */
    public static final int TYPE_UNSPECIFIED_VALUE = 0;
    /**
     *
     *
     * <pre>
     * Plain text
     * </pre>
     *
     * <code>PLAIN_TEXT = 1;</code>
     */
    public static final int PLAIN_TEXT_VALUE = 1;
    /**
     *
     *
     * <pre>
     * HTML
     * </pre>
     *
     * <code>HTML = 2;</code>
     */
    public static final int HTML_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;
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    /**
     * @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 Type 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 Type forNumber(int value) {
      switch (value) {
        case 0:
          return TYPE_UNSPECIFIED;
        case 1:
          return PLAIN_TEXT;
        case 2:
          return HTML;
        default:
          return null;
      }
    }

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

    private static final com.google.protobuf.Internal.EnumLiteMap<Type> internalValueMap =
        new com.google.protobuf.Internal.EnumLiteMap<Type>() {
          public Type findValueByNumber(int number) {
            return Type.forNumber(number);
          }
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    public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalStateException(
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    }

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

    public static final com.google.protobuf.Descriptors.EnumDescriptor getDescriptor() {
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    private static final Type[] VALUES = values();

    public static Type valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
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    }

    private final int value;

    private Type(int value) {
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    }

    // @@protoc_insertion_point(enum_scope:google.cloud.language.v1.Document.Type)
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  private java.lang.Object source_;

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    GCS_CONTENT_URI(3),
    SOURCE_NOT_SET(0);
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    private SourceCase(int value) {
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    /**
     * @param value The number of the enum to look for.
     * @return The enum associated with the given number.
     * @deprecated Use {@link #forNumber(int)} instead.
     */
    @java.lang.Deprecated
    public static SourceCase valueOf(int value) {
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    }

    public static SourceCase forNumber(int value) {
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        case 3:
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        case 0:
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        default:
          return null;
      }
    }

    public int getNumber() {
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    }
  };

  public SourceCase getSourceCase() {
    return SourceCase.forNumber(sourceCase_);
  }

  public static final int TYPE_FIELD_NUMBER = 1;
  private int type_ = 0;
  /**
   *
   *
   * <pre>
   * Required. If the type is not set or is `TYPE_UNSPECIFIED`,
   * returns an `INVALID_ARGUMENT` error.
   * </pre>
   *
   * <code>.google.cloud.language.v1.Document.Type type = 1;</code>
   *
   * @return The enum numeric value on the wire for type.
   */
  @java.lang.Override
  public int getTypeValue() {
    return type_;
  }
  /**
   *
   *
   * <pre>
   * Required. If the type is not set or is `TYPE_UNSPECIFIED`,
   * returns an `INVALID_ARGUMENT` error.
   * </pre>
   *
   * <code>.google.cloud.language.v1.Document.Type type = 1;</code>
   *
   * @return The type.
   */
  @java.lang.Override
  public com.google.cloud.language.v1.Document.Type getType() {
    com.google.cloud.language.v1.Document.Type result =
        com.google.cloud.language.v1.Document.Type.forNumber(type_);
    return result == null ? com.google.cloud.language.v1.Document.Type.UNRECOGNIZED : result;
  }

  public static final int CONTENT_FIELD_NUMBER = 2;
  /**
   *
   *
   * <pre>
   * The content of the input in string format.
   * Cloud audit logging exempt since it is based on user data.
   * </pre>
   *
   * <code>string content = 2;</code>
   *
   * @return Whether the content field is set.
   */
  public boolean hasContent() {
    return sourceCase_ == 2;
  }
  /**
   *
   *
   * <pre>
   * The content of the input in string format.
   * Cloud audit logging exempt since it is based on user data.
   * </pre>
   *
   * <code>string content = 2;</code>
   *
   * @return The content.
   */
  public java.lang.String getContent() {
    java.lang.Object ref = "";
    if (sourceCase_ == 2) {
      ref = source_;
    }
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
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      if (sourceCase_ == 2) {
        source_ = s;
      }
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * The content of the input in string format.
   * Cloud audit logging exempt since it is based on user data.
   * </pre>
   *
   * <code>string content = 2;</code>
   *
   * @return The bytes for content.
   */
  public com.google.protobuf.ByteString getContentBytes() {
    java.lang.Object ref = "";
    if (sourceCase_ == 2) {
      ref = source_;
    }
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      if (sourceCase_ == 2) {
        source_ = b;
      }
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int GCS_CONTENT_URI_FIELD_NUMBER = 3;
  /**
   *
   *
   * <pre>
   * The Google Cloud Storage URI where the file content is located.
   * This URI must be of the form: gs://bucket_name/object_name. For more
   * details, see https://cloud.google.com/storage/docs/reference-uris.
   * NOTE: Cloud Storage object versioning is not supported.
   * </pre>
   *
   * <code>string gcs_content_uri = 3;</code>
   *
   * @return Whether the gcsContentUri field is set.
   */
  public boolean hasGcsContentUri() {
    return sourceCase_ == 3;
  }
  /**
   *
   *
   * <pre>
   * The Google Cloud Storage URI where the file content is located.
   * This URI must be of the form: gs://bucket_name/object_name. For more
   * details, see https://cloud.google.com/storage/docs/reference-uris.
   * NOTE: Cloud Storage object versioning is not supported.
   * </pre>
   *
   * <code>string gcs_content_uri = 3;</code>
   *
   * @return The gcsContentUri.
   */
  public java.lang.String getGcsContentUri() {
    java.lang.Object ref = "";
    if (sourceCase_ == 3) {
      ref = source_;
    }
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
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        source_ = s;
      }
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * The Google Cloud Storage URI where the file content is located.
   * This URI must be of the form: gs://bucket_name/object_name. For more
   * details, see https://cloud.google.com/storage/docs/reference-uris.
   * NOTE: Cloud Storage object versioning is not supported.
   * </pre>
   *
   * <code>string gcs_content_uri = 3;</code>
   *
   * @return The bytes for gcsContentUri.
   */
  public com.google.protobuf.ByteString getGcsContentUriBytes() {
    java.lang.Object ref = "";
    if (sourceCase_ == 3) {
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    }
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      com.google.protobuf.ByteString b =
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      if (sourceCase_ == 3) {
        source_ = b;
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      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int LANGUAGE_FIELD_NUMBER = 4;

  @SuppressWarnings("serial")
  private volatile java.lang.Object language_ = "";
  /**
   *
   *
   * <pre>
   * The language of the document (if not specified, the language is
   * automatically detected). Both ISO and BCP-47 language codes are
   * accepted.&lt;br&gt;
   * [Language
   * Support](https://cloud.google.com/natural-language/docs/languages) lists
   * currently supported languages for each API method. If the language (either
   * specified by the caller or automatically detected) is not supported by the
   * called API method, an `INVALID_ARGUMENT` error is returned.
   * </pre>
   *
   * <code>string language = 4;</code>
   *
   * @return The language.
   */
  @java.lang.Override
  public java.lang.String getLanguage() {
    java.lang.Object ref = language_;
    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();
      language_ = s;
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * The language of the document (if not specified, the language is
   * automatically detected). Both ISO and BCP-47 language codes are
   * accepted.&lt;br&gt;
   * [Language
   * Support](https://cloud.google.com/natural-language/docs/languages) lists
   * currently supported languages for each API method. If the language (either
   * specified by the caller or automatically detected) is not supported by the
   * called API method, an `INVALID_ARGUMENT` error is returned.
   * </pre>
   *
   * <code>string language = 4;</code>
   *
   * @return The bytes for language.
   */
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    @java.lang.Override
    public Builder setField(
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      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.language.v1.Document) {
        return mergeFrom((com.google.cloud.language.v1.Document) other);
      } else {
        super.mergeFrom(other);
        return this;
      }
    }

    public Builder mergeFrom(com.google.cloud.language.v1.Document other) {
      if (other == com.google.cloud.language.v1.Document.getDefaultInstance()) return this;
      if (other.type_ != 0) {
        setTypeValue(other.getTypeValue());
      }
      if (!other.getLanguage().isEmpty()) {
        language_ = other.language_;
        bitField0_ |= 0x00000008;
        onChanged();
      }
      switch (other.getSourceCase()) {
        case CONTENT:
          {
            sourceCase_ = 2;
            source_ = other.source_;
            onChanged();
            break;
          }
        case GCS_CONTENT_URI:
          {
            sourceCase_ = 3;
            source_ = other.source_;
            onChanged();
            break;
          }
        case SOURCE_NOT_SET:
          {
            break;
          }
      }
      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 8:
              {
                type_ = input.readEnum();
                bitField0_ |= 0x00000001;
                break;
              } // case 8
            case 18:
              {
                java.lang.String s = input.readStringRequireUtf8();
                sourceCase_ = 2;
                source_ = s;
                break;
              } // case 18
            case 26:
              {
                java.lang.String s = input.readStringRequireUtf8();
                sourceCase_ = 3;
                source_ = s;
                break;
              } // case 26
            case 34:
              {
                language_ = input.readStringRequireUtf8();
                bitField0_ |= 0x00000008;
                break;
              } // case 34
            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 sourceCase_ = 0;
    private java.lang.Object source_;

    public SourceCase getSourceCase() {
      return SourceCase.forNumber(sourceCase_);
    }

    public Builder clearSource() {
      sourceCase_ = 0;
      source_ = null;
      onChanged();
      return this;
    }

    private int bitField0_;

    private int type_ = 0;
    /**
     *
     *
     * <pre>
     * Required. If the type is not set or is `TYPE_UNSPECIFIED`,
     * returns an `INVALID_ARGUMENT` error.
     * </pre>
     *
     * <code>.google.cloud.language.v1.Document.Type type = 1;</code>
     *
     * @return The enum numeric value on the wire for type.
     */
    @java.lang.Override
    public int getTypeValue() {
      return type_;
    }
    /**
     *
     *
     * <pre>
     * Required. If the type is not set or is `TYPE_UNSPECIFIED`,
     * returns an `INVALID_ARGUMENT` error.
     * </pre>
     *
     * <code>.google.cloud.language.v1.Document.Type type = 1;</code>
     *
     * @param value The enum numeric value on the wire for type to set.
     * @return This builder for chaining.
     */
    public Builder setTypeValue(int value) {
      type_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Required. If the type is not set or is `TYPE_UNSPECIFIED`,
     * returns an `INVALID_ARGUMENT` error.
     * </pre>
     *
     * <code>.google.cloud.language.v1.Document.Type type = 1;</code>
     *
     * @return The type.
     */
    @java.lang.Override
    public com.google.cloud.language.v1.Document.Type getType() {
      com.google.cloud.language.v1.Document.Type result =
          com.google.cloud.language.v1.Document.Type.forNumber(type_);
      return result == null ? com.google.cloud.language.v1.Document.Type.UNRECOGNIZED : result;
    }
    /**
     *
     *
     * <pre>
     * Required. If the type is not set or is `TYPE_UNSPECIFIED`,
     * returns an `INVALID_ARGUMENT` error.
     * </pre>
     *
     * <code>.google.cloud.language.v1.Document.Type type = 1;</code>
     *
     * @param value The type to set.
     * @return This builder for chaining.
     */
    public Builder setType(com.google.cloud.language.v1.Document.Type value) {
      if (value == null) {
        throw new NullPointerException();
      }
      bitField0_ |= 0x00000001;
      type_ = value.getNumber();
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Required. If the type is not set or is `TYPE_UNSPECIFIED`,
     * returns an `INVALID_ARGUMENT` error.
     * </pre>
     *
     * <code>.google.cloud.language.v1.Document.Type type = 1;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearType() {
      bitField0_ = (bitField0_ & ~0x00000001);
      type_ = 0;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * The content of the input in string format.
     * Cloud audit logging exempt since it is based on user data.
     * </pre>
     *
     * <code>string content = 2;</code>
     *
     * @return Whether the content field is set.
     */
    @java.lang.Override
    public boolean hasContent() {
      return sourceCase_ == 2;
    }
    /**
     *
     *
     * <pre>
     * The content of the input in string format.
     * Cloud audit logging exempt since it is based on user data.
     * </pre>
     *
     * <code>string content = 2;</code>
     *
     * @return The content.
     */
    @java.lang.Override
    public java.lang.String getContent() {
      java.lang.Object ref = "";
      if (sourceCase_ == 2) {
        ref = source_;
      }
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        if (sourceCase_ == 2) {
          source_ = s;
        }
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The content of the input in string format.
     * Cloud audit logging exempt since it is based on user data.
     * </pre>
     *
     * <code>string content = 2;</code>
     *
     * @return The bytes for content.
     */
    @java.lang.Override
    public com.google.protobuf.ByteString getContentBytes() {
      java.lang.Object ref = "";
      if (sourceCase_ == 2) {
        ref = source_;
      }
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        if (sourceCase_ == 2) {
          source_ = b;
        }
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The content of the input in string format.
     * Cloud audit logging exempt since it is based on user data.
     * </pre>
     *
     * <code>string content = 2;</code>
     *
     * @param value The content to set.
     * @return This builder for chaining.
     */
    public Builder setContent(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      sourceCase_ = 2;
      source_ = value;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The content of the input in string format.
     * Cloud audit logging exempt since it is based on user data.
     * </pre>
     *
     * <code>string content = 2;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearContent() {
      if (sourceCase_ == 2) {
        sourceCase_ = 0;
        source_ = null;
        onChanged();
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * The content of the input in string format.
     * Cloud audit logging exempt since it is based on user data.
     * </pre>
     *
     * <code>string content = 2;</code>
     *
     * @param value The bytes for content to set.
     * @return This builder for chaining.
     */
    public Builder setContentBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      sourceCase_ = 2;
      source_ = value;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * The Google Cloud Storage URI where the file content is located.
     * This URI must be of the form: gs://bucket_name/object_name. For more
     * details, see https://cloud.google.com/storage/docs/reference-uris.
     * NOTE: Cloud Storage object versioning is not supported.
     * </pre>
     *
     * <code>string gcs_content_uri = 3;</code>
     *
     * @return Whether the gcsContentUri field is set.
     */
    @java.lang.Override
    public boolean hasGcsContentUri() {
      return sourceCase_ == 3;
    }
    /**
     *
     *
     * <pre>
     * The Google Cloud Storage URI where the file content is located.
     * This URI must be of the form: gs://bucket_name/object_name. For more
     * details, see https://cloud.google.com/storage/docs/reference-uris.
     * NOTE: Cloud Storage object versioning is not supported.
     * </pre>
     *
     * <code>string gcs_content_uri = 3;</code>
     *
     * @return The gcsContentUri.
     */
    @java.lang.Override
    public java.lang.String getGcsContentUri() {
      java.lang.Object ref = "";
      if (sourceCase_ == 3) {
        ref = source_;
      }
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        if (sourceCase_ == 3) {
          source_ = s;
        }
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The Google Cloud Storage URI where the file content is located.
     * This URI must be of the form: gs://bucket_name/object_name. For more
     * details, see https://cloud.google.com/storage/docs/reference-uris.
     * NOTE: Cloud Storage object versioning is not supported.
     * </pre>
     *
     * <code>string gcs_content_uri = 3;</code>
     *
     * @return The bytes for gcsContentUri.
     */
    @java.lang.Override
    public com.google.protobuf.ByteString getGcsContentUriBytes() {
      java.lang.Object ref = "";
      if (sourceCase_ == 3) {
        ref = source_;
      }
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        if (sourceCase_ == 3) {
          source_ = b;
        }
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The Google Cloud Storage URI where the file content is located.
     * This URI must be of the form: gs://bucket_name/object_name. For more
     * details, see https://cloud.google.com/storage/docs/reference-uris.
     * NOTE: Cloud Storage object versioning is not supported.
     * </pre>
     *
     * <code>string gcs_content_uri = 3;</code>
     *
     * @param value The gcsContentUri to set.
     * @return This builder for chaining.
     */
    public Builder setGcsContentUri(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      sourceCase_ = 3;
      source_ = value;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The Google Cloud Storage URI where the file content is located.
     * This URI must be of the form: gs://bucket_name/object_name. For more
     * details, see https://cloud.google.com/storage/docs/reference-uris.
     * NOTE: Cloud Storage object versioning is not supported.
     * </pre>
     *
     * <code>string gcs_content_uri = 3;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearGcsContentUri() {
      if (sourceCase_ == 3) {
        sourceCase_ = 0;
        source_ = null;
        onChanged();
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * The Google Cloud Storage URI where the file content is located.
     * This URI must be of the form: gs://bucket_name/object_name. For more
     * details, see https://cloud.google.com/storage/docs/reference-uris.
     * NOTE: Cloud Storage object versioning is not supported.
     * </pre>
     *
     * <code>string gcs_content_uri = 3;</code>
     *
     * @param value The bytes for gcsContentUri to set.
     * @return This builder for chaining.
     */
    public Builder setGcsContentUriBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      sourceCase_ = 3;
      source_ = value;
      onChanged();
      return this;
    }

    private java.lang.Object language_ = "";
    /**
     *
     *
     * <pre>
     * The language of the document (if not specified, the language is
     * automatically detected). Both ISO and BCP-47 language codes are
     * accepted.&lt;br&gt;
     * [Language
     * Support](https://cloud.google.com/natural-language/docs/languages) lists
     * currently supported languages for each API method. If the language (either
     * specified by the caller or automatically detected) is not supported by the
     * called API method, an `INVALID_ARGUMENT` error is returned.
     * </pre>
     *
     * <code>string language = 4;</code>
     *
     * @return The language.
     */
    public java.lang.String getLanguage() {
      java.lang.Object ref = language_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        language_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The language of the document (if not specified, the language is
     * automatically detected). Both ISO and BCP-47 language codes are
     * accepted.&lt;br&gt;
     * [Language
     * Support](https://cloud.google.com/natural-language/docs/languages) lists
     * currently supported languages for each API method. If the language (either
     * specified by the caller or automatically detected) is not supported by the
     * called API method, an `INVALID_ARGUMENT` error is returned.
     * </pre>
     *
     * <code>string language = 4;</code>
     *
     * @return The bytes for language.
     */
    public com.google.protobuf.ByteString getLanguageBytes() {
      java.lang.Object ref = language_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        language_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * The language of the document (if not specified, the language is
     * automatically detected). Both ISO and BCP-47 language codes are
     * accepted.&lt;br&gt;
     * [Language
     * Support](https://cloud.google.com/natural-language/docs/languages) lists
     * currently supported languages for each API method. If the language (either
     * specified by the caller or automatically detected) is not supported by the
     * called API method, an `INVALID_ARGUMENT` error is returned.
     * </pre>
     *
     * <code>string language = 4;</code>
     *
     * @param value The language to set.
     * @return This builder for chaining.
     */
    public Builder setLanguage(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      language_ = value;
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The language of the document (if not specified, the language is
     * automatically detected). Both ISO and BCP-47 language codes are
     * accepted.&lt;br&gt;
     * [Language
     * Support](https://cloud.google.com/natural-language/docs/languages) lists
     * currently supported languages for each API method. If the language (either
     * specified by the caller or automatically detected) is not supported by the
     * called API method, an `INVALID_ARGUMENT` error is returned.
     * </pre>
     *
     * <code>string language = 4;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearLanguage() {
      language_ = getDefaultInstance().getLanguage();
      bitField0_ = (bitField0_ & ~0x00000008);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * The language of the document (if not specified, the language is
     * automatically detected). Both ISO and BCP-47 language codes are
     * accepted.&lt;br&gt;
     * [Language
     * Support](https://cloud.google.com/natural-language/docs/languages) lists
     * currently supported languages for each API method. If the language (either
     * specified by the caller or automatically detected) is not supported by the
     * called API method, an `INVALID_ARGUMENT` error is returned.
     * </pre>
     *
     * <code>string language = 4;</code>
     *
     * @param value The bytes for language to set.
     * @return This builder for chaining.
     */
    public Builder setLanguageBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      language_ = value;
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }

    @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.language.v1.Document)
  }

  // @@protoc_insertion_point(class_scope:google.cloud.language.v1.Document)
  private static final com.google.cloud.language.v1.Document DEFAULT_INSTANCE;

  static {
    DEFAULT_INSTANCE = new com.google.cloud.language.v1.Document();
  }

  public static com.google.cloud.language.v1.Document getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }

  private static final com.google.protobuf.Parser<Document> PARSER =
      new com.google.protobuf.AbstractParser<Document>() {
        @java.lang.Override
        public Document 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<Document> parser() {
    return PARSER;
  }

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

  @java.lang.Override
  public com.google.cloud.language.v1.Document getDefaultInstanceForType() {
    return DEFAULT_INSTANCE;
  }
}