@java.lang.Override
    public Builder clear() {
      super.clear();
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      createTime_ = null;
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        createTimeBuilder_.dispose();
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      }
      updateTime_ = null;
      if (updateTimeBuilder_ != null) {
        updateTimeBuilder_.dispose();
        updateTimeBuilder_ = null;
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      resource_ = "";
      method_ = "";
      kmsKeyName_ = "";
      kmsKeyVersionName_ = "";
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      }
      if (createRecognizerRequestBuilder_ != null) {
        createRecognizerRequestBuilder_.clear();
      }
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      if (undeleteCustomClassRequestBuilder_ != null) {
        undeleteCustomClassRequestBuilder_.clear();
      }
      if (createPhraseSetRequestBuilder_ != null) {
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      }
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      if (updateConfigRequestBuilder_ != null) {
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      }
      progressPercent_ = 0;
      if (batchRecognizeMetadataBuilder_ != null) {
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      }
      requestCase_ = 0;
      request_ = null;
      metadataCase_ = 0;
      metadata_ = null;
      return this;
    }
<pre>
Represents the metadata of a long-running operation.
</pre>

Protobuf type {@code google.cloud.speech.v2.OperationMetadata}
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/OperationMetadata.java