namespace System.Data.Entity.Core.Objects
{
    public class ObjectQuery<T> : ObjectQuery, IEnumerable, IEnumerable<T>, IDbAsyncEnumerable, IDbAsyncEnumerable<T>, IOrderedQueryable, IOrderedQueryable<T>, IQueryable, IQueryable<T>
    {
        public ObjectQuery<DbDataRecord> GroupBy(string keys, string projection, params ObjectParameter[] parameters);
    }
}