def round_coordinates(cell_poly):
    """
    Rounds the coords of the polygon
    Only implemented to pass tests.

    :param cell_poly: polygon feature

    :returns: polygon feature
    """

    coords = cell_poly["geometry"]["coordinates"]

    coords = [
        [[round(coord, 6) for coord in point] for point in line] for line in coords
    ]

    cell_poly["geometry"]["coordinates"] = coords

    return cell_poly