    def apply_op_rules(self, op_def):
        """Apply special rules to change template op definition
        Parameters
        ----------
        op_def : str
            Operator definition code string
        Returns
        -------
        str
            Modified op definition code string
        """
        return op_def
Apply special rules to change template op definition
Parameters
----------
op_def : str
Operator definition code string
Returns
-------
str
Modified op definition code string
python/aitemplate/backend/target.py