Write out commutator

        Write out the commutator according to its definition
        $[\Op{A}, \Op{B}] = \Op{A}\Op{B} - \Op{A}\Op{B}$.

        See :meth:`.Expression.doit`.

def doit(self, classes=None, recursive=True, **kwargs):
        """Write out commutator

        Write out the commutator according to its definition
        $[\Op{A}, \Op{B}] = \Op{A}\Op{B} - \Op{A}\Op{B}$.

        See :meth:`.Expression.doit`.
        """
        return super().doit(classes, recursive, **kwargs)