public Builder clearUpdateMask() {
      bitField0_ = (bitField0_ & ~0x00000002);
      updateMask_ = null;
      if (updateMaskBuilder_ != null) {
        updateMaskBuilder_.dispose();
        updateMaskBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
The list of fields to be updated. Currently only `display_name` and
'input_config'
</pre>

<code>.google.protobuf.FieldMask update_mask = 2;</code>
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/UpdateGlossaryRequest.java