def update(self, data):
data = values.of({'<STR_LIT>': serialize.object(data), })<EOL>payload = self._version.update(<EOL>'<STR_LIT:POST>',<EOL>self._uri,<EOL>data=data,<EOL>)<EOL>return SyncMapItemInstance(<EOL>self._version,<EOL>payload,<EOL>service_sid=self._solution['<STR_LIT>'],<EOL>map_sid=self._solution['<STR_LIT>'],<EOL>key=self._solution['<STR_LIT:key>'],<EOL>)<EOL>
Update the SyncMapItemInstance

:param dict data: The data

:returns: Updated SyncMapItemInstance
:rtype: twilio.rest.preview.sync.service.sync_map.sync_map_item.SyncMapItemInstance