@java.lang.Override
  public com.google.protobuf.ByteString getUidBytes() {
    java.lang.Object ref = uid_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      uid_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
<pre>
Output only. System-assigned unique identifier for the PhraseSet.
This field is not used.
</pre>

<code>string uid = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The bytes for uid.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/PhraseSet.java