syntax = "proto3"; import "google/protobuf/timestamp.proto"; import "google/protobuf/duration.proto"; import "b/b.proto"; import "types/types.proto"; package a; message A { string name = 1; a.b.B b = 2; google.protobuf.Timestamp timestamp = 3; google.protobuf.Duration duration = 4; Types types = 5; }