Function u_strFromUTF8 

pub unsafe fn u_strFromUTF8<P3>(
    dest: *mut u16,
    destcapacity: i32,
    pdestlength: *mut i32,
    src: P3,
    srclength: i32,
    perrorcode: *mut UErrorCode,
) -> *mut u16
where
    P3: Param<PCSTR>,