/// <summary>
/// Specify the query's group-by options. Query will be grouped by specified <paramref name="fieldRef"/>.
/// </summary>
/// <param name="fieldRef">Reference to the field to group by.</param>
/// <returns>Returns the query itself.</returns>
public Query GroupBy(FieldReference fieldRef)
{
groupByFields.Add(fieldRef);
return(this);
}
/// <summary>
/// Adds a new query sort order relatively to a specified <paramref name="fieldRef"/>.
/// </summary>
/// <param name="fieldRef">Reference to the field where to perform the ordering on.</param>
/// <returns>Returns the query itself.</returns>
/// <remarks>Use <see cref="FieldReference.Ascending"/> with false value to specify descending order.</remarks>
public Query OrderBy(FieldReference fieldRef)
{
orderByFields.Add(fieldRef);
return(this);
}