Function u_vparseMessage 

pub unsafe fn u_vparseMessage<P0>(
    locale: P0,
    pattern: *const u16,
    patternlength: i32,
    source: *const u16,
    sourcelength: i32,
    ap: *mut i8,
    status: *mut UErrorCode,
)
where
    P0: Param<PCSTR>,