public static async Task<List<T>> GetLimitAsync<T>(Expression<Func<T, bool>> predicate, uint limit, Expression<Func<T, bool>> selector = null, bool orderByDescending = false) where T : class, IKaguyaQueryable<T> {
using (var db = new KaguyaDb()) {
var baseQuery = (from t in db.GetTable<T>().Where(predicate)
select t);
if(selector != null) {
..
baseQuery = baseQuery.OrderBy..
}
return await baseQuery.ToListAsync();
}