pub unsafe extern "C" fn CFAttributedStringCreateWithSubstring(
alloc: CFAllocatorRef,
aStr: CFAttributedStringRef,
range: CFRange
) -> CFAttributedStringRef
pub unsafe extern "C" fn CFAttributedStringCreateWithSubstring(
alloc: CFAllocatorRef,
aStr: CFAttributedStringRef,
range: CFRange
) -> CFAttributedStringRef