public Builder clearEventUpdate() {
      if (eventUpdateBuilder_ == null) {
        if (responseCase_ == 1) {
          responseCase_ = 0;
          response_ = null;
          onChanged();
        }
      } else {
        if (responseCase_ == 1) {
          responseCase_ = 0;
          response_ = null;
        }
        eventUpdateBuilder_.clear();
      }
      return this;
    }
<pre>
The event update message.
</pre>

<code>.google.cloud.visionai.v1.EventUpdate event_update = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ReceiveEventsResponse.java