public Builder clearUid() {
      uid_ = getDefaultInstance().getUid();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
Output only. System-assigned unique identifier for the Recognizer.
</pre>

<code>string uid = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return This builder for chaining.
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/Recognizer.java