Function xmlHashUpdateEntry2 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xmlHashUpdateEntry2(
    table: *mut c_void,
    name: *const xmlChar,
    name2: *const xmlChar,
    userdata: *mut c_void,
    f: Option<unsafe extern "C" fn(*mut c_void, *mut xmlChar)>,
) -> c_int

Update or add a 2-key entry.