public boolean hasUpdateMask() {
      return ((bitField0_ & 0x00000002) != 0);
    }
<pre>
Required. The update mask applies to the resource.
For the `FieldMask` definition, see
https://developers.google.com/protocol-buffers/docs/reference/google.protobuf#fieldmask
</pre>

<code>.google.protobuf.FieldMask update_mask = 2 [(.google.api.field_behavior) = REQUIRED];
</code>

@return Whether the updateMask field is set.
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/UpdateVodConfigRequest.java