def METHOD_NAME():
    x, y = map(Ty, ("$x$", "$y$"))
    copy_x, copy_y = Box('COPY', x, x @ x), Box('COPY', y, y @ y)
    copy_x.draw_as_spider, copy_y.draw_as_spider = True, True
    copy_x.drawing_name, copy_y.drawing_name = "", ""
    copy_x.color, copy_y.color = "black", "black"
    return copy_x @ copy_y >> Id(x) @ Swap(x, y) @ Id(y)