def copy(self, key):
        copy = Set(key=key, db=self.db)
        copy.clear()
        copy |= self
        return copy
Not supported by Edit widget.
dataset/ETHPy150Open iamteem/redisco/redisco/containers.py/Set.copy--crossover with--dataset/ETHPy150Open AnyMesh/anyMesh-Python/example/urwid/widget.py/Edit.set_text