Function lgraph_api_create_date_time_ymdhms 

pub unsafe extern "C" fn lgraph_api_create_date_time_ymdhms(
    year: c_int,
    month: c_uint,
    day: c_uint,
    hour: c_uint,
    minute: c_uint,
    second: c_uint,
) -> *mut lgraph_api_date_time_t