pub unsafe extern "C" fn CFAttributedStringCreateMutableCopy(
allocator: CFAllocatorRef,
max_length: CFIndex,
astr: CFAttributedStringRef,
) -> CFMutableAttributedStringRef
pub unsafe extern "C" fn CFAttributedStringCreateMutableCopy(
allocator: CFAllocatorRef,
max_length: CFIndex,
astr: CFAttributedStringRef,
) -> CFMutableAttributedStringRef