@java.lang.Override
  public boolean hasUpdateMask() {
    return ((bitField0_ & 0x00000002) != 0);
  }
<pre>
List of fields to be updated. If not present, the entire workflow
will be updated.
</pre>

<code>.google.protobuf.FieldMask update_mask = 2;</code>

@return Whether the updateMask field is set.
java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/UpdateWorkflowRequest.java