private void buildPartial0(
        com.google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata result) {
      int from_bitField0_ = bitField0_;
      int to_bitField0_ = 0;
      if (((from_bitField0_ & 0x00000001) != 0)) {
        result.startTime_ = startTimeBuilder_ == null ? startTime_ : startTimeBuilder_.build();
        to_bitField0_ |= 0x00000001;
      }
      if (((from_bitField0_ & 0x00000002) != 0)) {
        result.lastUpdateTime_ =
            lastUpdateTimeBuilder_ == null ? lastUpdateTime_ : lastUpdateTimeBuilder_.build();
        to_bitField0_ |= 0x00000002;
      }
      if (((from_bitField0_ & 0x00000004) != 0)) {
        result.progressPercentage_ = progressPercentage_;
      }
      result.bitField0_ |= to_bitField0_;
    }
<pre>
Metadata for response returned by the `SynthesizeLongAudio` method.
</pre>

Protobuf type {@code google.cloud.texttospeech.v1.SynthesizeLongAudioMetadata}
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/SynthesizeLongAudioMetadata.java