Function CTFontCreateCopyWithFamily 

pub unsafe extern "C-unwind" fn CTFontCreateCopyWithFamily(
    font: &CTFont,
    size: CGFloat,
    matrix: *const CGAffineTransform,
    family: &CFString,
) -> Option<CFRetained<CTFont>>

👎Deprecated: renamed to CTFont::copy_with_family

Available on crate feature CTFont only.