/// <summary>
/// Orders a query based upon the key selector provided.
/// </summary>
/// <typeparam name="TSource">The type of ParseObject being queried for.</typeparam>
/// <typeparam name="TSelector">The type of key returned by keySelector.</typeparam>
/// <param name="source">The query to order.</param>
/// <param name="keySelector">A function to extract a key from the ParseObject.</param>
/// <returns>A new ParseQuery based on source whose results will be ordered by
/// the key specified in the keySelector.</returns>
public static ParseQuery <TSource> OrderBy <TSource, TSelector>(
this ParseQuery <TSource> source, Expression <Func <TSource, TSelector> > keySelector)
where TSource : ParseObject
{
return(source.OrderBy(GetOrderByPath(keySelector)));
}