@java.lang.Override
  public com.google.protobuf.FieldMaskOrBuilder getUpdateMaskOrBuilder() {
    return updateMask_ == null ? com.google.protobuf.FieldMask.getDefaultInstance() : updateMask_;
  }
<pre>
The list of fields to be updated.
</pre>

<code>.google.protobuf.FieldMask update_mask = 2;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/UpdateCustomClassRequest.java