Function CGPathAddRoundedRect 

pub unsafe extern "C-unwind" fn CGPathAddRoundedRect(
    path: Option<&CGMutablePath>,
    transform: *const CGAffineTransform,
    rect: CGRect,
    corner_width: CGFloat,
    corner_height: CGFloat,
)

👎Deprecated: renamed to CGMutablePath::add_rounded_rect

Available on crate feature CGPath only.