holder-client-decode-tag: native Holder(value=Tag(label='x')) set=['value'] json={"value":{"label":"x"}}
holder-client-decode-other: native Holder(value={'other': 1}) set=['value'] json={"value":{"other":1}}
holder-client-convert-other: native Holder(value={'other': 1}) set=['value'] json={"value":{"other":1}}
