'means this element is part of a larger object, hence a property of
that object'

def collect(self, top, sup, argv=None, parent=''):

    try:
        argv_copy = sd_copy(argv)
        return ([self.repr(top, sup, argv_copy, parent=parent)], [])
    except AttributeError as exc:
        print '#!!!!', exc
        return ([], [])
