async def rounded_rectangle(
    rectangle,
    xy,
    corner_radius,
    fill=None,
    outline=None
):
    upper_left_point = xy[0]
    bottom_right_point = xy[1]

    rectangle.pieslice(
        [
            upper_left_point,
            (
                upper_left_point[0] + corner_radius * 2,
                upper_left_point[1] + corner_radius * 2,
            ),
        ],
        180,
        270,
        fill=fill,
        outline=outline,
    )
    rectangle.pieslice(
        [
            (
                bottom_right_point[0] - corner_radius * 2,
                bottom_right_point[1] - corner_radius * 2,
            ),
            bottom_right_point,
        ],
        0,
        90,
        fill=fill,
        outline=outline,
    )
    rectangle.pieslice(
        [
            (
                upper_left_point[0],
                bottom_right_point[1] - corner_radius * 2,
            ),
            (
                upper_left_point[0] + corner_radius * 2,
                bottom_right_point[1],
            ),
        ],
        90,
        180,
        fill=fill,
        outline=outline,
    )
    rectangle.pieslice(
        [
            (
                bottom_right_point[0] - corner_radius * 2,
                upper_left_point[1],
            ),
            (
                bottom_right_point[0],
                upper_left_point[1] + corner_radius * 2,
            ),
        ],
        270,
        360,
        fill=fill,
        outline=outline,
    )
    rectangle.rectangle(
        [
            (
                upper_left_point[0],
                upper_left_point[1] + corner_radius,
            ),
            (
                bottom_right_point[0],
                bottom_right_point[1] - corner_radius,
            ),
        ],
        fill=fill,
        outline=outline,
    )
    rectangle.rectangle(
        [
            (upper_left_point[0] + corner_radius, upper_left_point[1]),
            (bottom_right_point[0] - corner_radius, bottom_right_point[1]),
        ],
        fill=fill,
        outline=outline,
    )
    rectangle.line(
        [
            (
                upper_left_point[0] + corner_radius,
                upper_left_point[1],
            ),
            (
                bottom_right_point[0] - corner_radius,
                upper_left_point[1],
            ),
        ],
        fill=outline,
    )
    rectangle.line(
        [
            (
                upper_left_point[0] + corner_radius,
                bottom_right_point[1],
            ),
            (
                bottom_right_point[0] - corner_radius,
                bottom_right_point[1],
            ),
        ],
        fill=outline,
    )
    rectangle.line(
        [
            (
                upper_left_point[0],
                upper_left_point[1] + corner_radius,
            ),
            (
                upper_left_point[0],
                bottom_right_point[1] - corner_radius,
            ),
        ],
        fill=outline,
    )
    rectangle.line(
        [
            (
                bottom_right_point[0],
                upper_left_point[1] + corner_radius,
            ),
            (
                bottom_right_point[0],
                bottom_right_point[1] - corner_radius,
            ),
        ],
        fill=outline,
    )