public boolean hasUpdateTime() {
      return ((bitField0_ & 0x00000004) != 0);
    }
<pre>
Output only. The update timestamp.
</pre>

<code>
.google.protobuf.Timestamp update_time = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>

@return Whether the updateTime field is set.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Operator.java