private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.speech.v2.TranscriptNormalization,
            com.google.cloud.speech.v2.TranscriptNormalization.Builder,
            com.google.cloud.speech.v2.TranscriptNormalizationOrBuilder>
        getTranscriptNormalizationFieldBuilder() {
      if (transcriptNormalizationBuilder_ == null) {
        transcriptNormalizationBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.speech.v2.TranscriptNormalization,
                com.google.cloud.speech.v2.TranscriptNormalization.Builder,
                com.google.cloud.speech.v2.TranscriptNormalizationOrBuilder>(
                getTranscriptNormalization(), getParentForChildren(), isClean());
        transcriptNormalization_ = null;
      }
      return transcriptNormalizationBuilder_;
    }
<pre>
Optional. Use transcription normalization to automatically replace parts of
the transcript with phrases of your choosing. For StreamingRecognize, this
normalization only applies to stable partial transcripts (stability &gt; 0.8)
and final transcripts.
</pre>

<code>
.google.cloud.speech.v2.TranscriptNormalization transcript_normalization = 11 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognitionConfig.java