<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def getMibSymbol(self):
 """Returns MIB variable symbolic identification. Returns ------- str MIB module name str MIB variable symbolic name : :py:class:`~pysnmp.proto.rfc1902.ObjectName` class instance representing MIB variable instance index. Raises ------ SmiError If MIB variable conversion has not been performed. Examples -------- ('SNMPv2-MIB', 'sysDescr', (0,)) """

        if self._state & self.ST_CLEAN:
            return self._modName, self._symName, self._indices

        else:
            raise SmiError(
                '%s object not fully initialized' % self.__class__.__name__)