def __init__(self, values=None):
super().__init__()
self.is_any = values is None
self.attributes = Field()
self.values = []
self.append_func = FuncValue(functions_builtin.AppendFunction(self),
self)
self.attributes.get_attribute('append').revise(self.append_func)
def apply_to_object(self, obj: 'Object'):
append_func = Object(
FuncValue(functions_builtin.AppendFunction(self), obj))
obj.attributes.get_attribute('append').revise(append_func)