@Test
public void unknownOptionChanged() {

    RecordMetaData metaData1 = RecordMetaData.build(TestRecords1Proto.getDescriptor());
    validateIndexMutation("index option changed", metaData1, "MySimpleRecord$str_value_indexed",
            indexProto -> changeOption(indexProto, "dummyOption", "dummyValue"));
    RecordMetaData metaData2 = replaceIndex(metaData1, "MySimpleRecord$str_value_indexed",
            indexProto -> makeUnique(changeOption(indexProto, "dummyOption", "dummyValue")));
    RecordMetaData metaData3 = replaceIndex(metaData2, "MySimpleRecord$str_value_indexed",
            indexProto -> changeOption(indexProto, IndexOptions.UNIQUE_OPTION, null));
    validator.validate(metaData2, metaData3);
    validateIndexMutation("index option changed", metaData3, "MySimpleRecord$str_value_indexed",
            indexProto -> changeOption(indexProto, "dummyOption", "dummyValue2"));
}