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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def anycast_mac(self, **kwargs):
 """Configure an anycast MAC address. Args: int_type (str):
 Type of interface. (gigabitethernet, tengigabitethernet etc). mac (str):
 MAC address to configure (example: '0011.2233.4455'). delete (bool):
 True is the IP address is added and False if its to be deleted (True, False). Default value will be False if not specified. get (bool):
 Get config instead of editing config. (True, False) callback (function):
 A function executed upon completion of the method. The only parameter passed to `callback` will be the ``ElementTree`` `config`. Returns: Return value of `callback`. Raises: KeyError: if `mac` is not passed. Examples: """

        callback = kwargs.pop('callback', self._callback)
        anycast_mac = getattr(self._rbridge, 'rbridge_id_ip_static_ag_ip_'
                              'config_anycast_gateway_mac_ip_anycast_'
                              'gateway_mac')
        config = anycast_mac(rbridge_id=kwargs.pop('rbridge_id', '1'),
                             ip_anycast_gateway_mac=kwargs.pop('mac'))
        if kwargs.pop('get', False):
            return callback(config, handler='get_config')
        if kwargs.pop('delete', False):
            config.find('.//*anycast-gateway-mac').set('operation', 'delete')
        return callback(config)