def _check_data_flow_validity(self, check_data_flow):
        """Checks the validity of a data flow

        Calls further checks to inspect the id, ports and data types.

        :param rafcon.core.data_flow.DataFlow check_data_flow: The data flow to be checked
        :return bool validity, str message: validity is True, when the data flow is valid, False else. message gives
            more information especially if the data flow is not valid
        """
        valid, message = self._check_data_flow_id(check_data_flow)
        if not valid:
            return False, message

        valid, message = self._check_data_flow_ports(check_data_flow)
        if not valid:
            return False, message

        return self._check_data_flow_types(check_data_flow)
def _check_data_flow_validity ( self , check_data_flow ) : valid , message = self . _check_data_flow_id ( check_data_flow ) if not valid : return False , message valid , message = self . _check_data_flow_ports ( check_data_flow ) if not valid : return False , message return self . _check_data_flow_types ( check_data_flow )
Checks the validity of a data flow

        Calls further checks to inspect the id, ports and data types.

        :param rafcon.core.data_flow.DataFlow check_data_flow: The data flow to be checked
        :return bool validity, str message: validity is True, when the data flow is valid, False else. message gives
            more information especially if the data flow is not valid