Function uikit_sys::CFStringCreateMutableWithExternalCharactersNoCopy

pub unsafe extern "C" fn CFStringCreateMutableWithExternalCharactersNoCopy(
    alloc: CFAllocatorRef, 
    chars: *mut UniChar, 
    numChars: CFIndex, 
    capacity: CFIndex, 
    externalCharactersAllocator: CFAllocatorRef
) -> CFMutableStringRef