def _proxy(self):
        """
        Generate an instance context for the instance, the context is capable of
        performing various actions.  All instance actions are proxied to the context

        :returns: SyncMapItemContext for this SyncMapItemInstance
        :rtype: twilio.rest.preview.sync.service.sync_map.sync_map_item.SyncMapItemContext
        """
        if self._context is None:
            self._context = SyncMapItemContext(
                self._version,
                service_sid=self._solution['service_sid'],
                map_sid=self._solution['map_sid'],
                key=self._solution['key'],
            )
        return self._context
Generate an instance context for the instance, the context is capable of
        performing various actions.  All instance actions are proxied to the context

        :returns: SyncMapItemContext for this SyncMapItemInstance
        :rtype: twilio.rest.preview.sync.service.sync_map.sync_map_item.SyncMapItemContext