public boolean hasUpdateMask() {
      return ((bitField0_ & 0x00000002) != 0);
    }
<pre>
Required. Mask specifying which fields in the workstation configuration
should be updated.
</pre>

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

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