#[no_mangle]
extern "C" fn ICU4XDateTime_create_from_iso_in_calendar(
    year: i32,
    month: u8,
    day: u8,
    hour: u8,
    minute: u8,
    second: u8,
    nanosecond: u32,
    calendar: &ICU4XCalendar,
) -> DiplomatResult<Box<ICU4XDateTime>, ICU4XError>