@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      progressPercent_ = 0;
      error_ = null;
      if (errorBuilder_ != null) {
        errorBuilder_.dispose();
        errorBuilder_ = null;
      }
      uri_ = "";
      return this;
    }
<pre>
Metadata about transcription for a single file (for example, progress
percent).
</pre>

Protobuf type {@code google.cloud.speech.v2.BatchRecognizeTranscriptionMetadata}
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/BatchRecognizeTranscriptionMetadata.java