def _update_from_database(self):
collection = JSONClientValidated('<STR_LIT>',<EOL>collection='<STR_LIT>',<EOL>runtime=self._runtime)<EOL>self._my_map = collection.find_one({'<STR_LIT>': self._my_map['<STR_LIT>']})<EOL>
Updates map to latest state in database.

        Should be called prior to major object events to assure that an
        assessment being taken on multiple devices are reasonably synchronized.