Function CTFontGetOpticalBoundsForGlyphs 

pub unsafe extern "C-unwind" fn CTFontGetOpticalBoundsForGlyphs(
    font: &CTFont,
    glyphs: NonNull<CGGlyph>,
    bounding_rects: *mut CGRect,
    count: CFIndex,
    options: CFOptionFlags,
) -> CGRect

👎Deprecated: renamed to CTFont::optical_bounds_for_glyphs

Available on crate features CTFont and objc2-core-graphics only.