public Builder putTranscriptionMetadata(
        java.lang.String key,
        com.google.cloud.speech.v2.BatchRecognizeTranscriptionMetadata value) {
      if (key == null) {
        throw new NullPointerException("map key");
      }
      if (value == null) {
        throw new NullPointerException("map value");
      }
      internalGetMutableTranscriptionMetadata().ensureBuilderMap().put(key, value);
      bitField0_ |= 0x00000001;
      return this;
    }
<pre>
Map from provided filename to the transcription metadata for that file.
</pre>

<code>
map&lt;string, .google.cloud.speech.v2.BatchRecognizeTranscriptionMetadata&gt; transcription_metadata = 1;
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/BatchRecognizeMetadata.java