public Builder clearSpeechStartTimeout() {
        bitField0_ = (bitField0_ & ~0x00000001);
        speechStartTimeout_ = null;
        if (speechStartTimeoutBuilder_ != null) {
          speechStartTimeoutBuilder_.dispose();
          speechStartTimeoutBuilder_ = null;
        }
        onChanged();
        return this;
      }
<pre>
Duration to timeout the stream if no speech begins.
</pre>

<code>.google.protobuf.Duration speech_start_timeout = 1;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/StreamingRecognitionConfig.java