def add_class(cls, *args):
        """Add classes to the group.

        Parameters
        ----------
        *args : `type`
            Classes to add.
        """
        for cls2 in args:
            cls.classes[cls2.__name__] = cls2
def add_class ( cls , * args ) : for cls2 in args : cls . classes [ cls2 . __name__ ] = cls2
Add classes to the group.

        Parameters
        ----------
        *args : `type`
            Classes to add.