public Builder mergeResultEndTime(com.google.protobuf.Duration value) {
      if (resultEndTimeBuilder_ == null) {
        if (((bitField0_ & 0x00000004) != 0)
            && resultEndTime_ != null
            && resultEndTime_ != com.google.protobuf.Duration.getDefaultInstance()) {
          getResultEndTimeBuilder().mergeFrom(value);
        } else {
          resultEndTime_ = value;
        }
      } else {
        resultEndTimeBuilder_.mergeFrom(value);
      }
      if (resultEndTime_ != null) {
        bitField0_ |= 0x00000004;
        onChanged();
      }
      return this;
    }
<pre>
Time offset of the end of this result relative to the
beginning of the audio.
</pre>

<code>.google.protobuf.Duration result_end_time = 4;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/SpeechRecognitionResult.java