public Builder mergeSpeechEndTimeout(com.google.protobuf.Duration value) {
        if (speechEndTimeoutBuilder_ == null) {
          if (((bitField0_ & 0x00000002) != 0)
              && speechEndTimeout_ != null
              && speechEndTimeout_ != com.google.protobuf.Duration.getDefaultInstance()) {
            getSpeechEndTimeoutBuilder().mergeFrom(value);
          } else {
            speechEndTimeout_ = value;
          }
        } else {
          speechEndTimeoutBuilder_.mergeFrom(value);
        }
        if (speechEndTimeout_ != null) {
          bitField0_ |= 0x00000002;
          onChanged();
        }
        return this;
      }
<pre>
Duration to timeout the stream after speech ends.
</pre>

<code>.google.protobuf.Duration speech_end_timeout = 2;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/StreamingRecognitionConfig.java