@java.lang.Override
    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.setUnknownFields(unknownFields);
    }
<pre>
If set, returns a message specifying which part of the speech adaptation
request timed out.
</pre>

<code>string timeout_message = 4;</code>

@param value The bytes for timeoutMessage to set.
@return This builder for chaining.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechAdaptationInfo.java