def METHOD_NAME(self):
    pin = self.inv_inst.get_pin("Z")
    self.add_layout_pin_rect_center(text="Z",
                                    layer=pin.layer,
                                    offset=pin.center(),
                                    width=pin.width(),
                                    height=pin.height())
    for pin_name in ["A", "B", "C", "D"]:
        pin = self.nand_inst.get_pin(pin_name)
        self.add_layout_pin_rect_center(text=pin_name,
                                        layer=pin.layer,
                                        offset=pin.center(),
                                        width=pin.width(),
                                        height=pin.height())