public Builder clearEvent() {
      event_ = getDefaultInstance().getEvent();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
Evevt name.
</pre>

<code>string event = 2;</code>

@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/RequestMetadata.java