Function windows_sys::Win32::Globalization::u_strToUTF8WithSub
pub unsafe extern "cdecl" fn u_strToUTF8WithSub(
dest: PCSTR,
destcapacity: i32,
pdestlength: *mut i32,
src: *const u16,
srclength: i32,
subchar: i32,
pnumsubstitutions: *mut i32,
perrorcode: *mut UErrorCode,
) -> PSTR