| PartialSortT(IEnumerableT, Int32) | Combines OrderByTSource, TKey(IEnumerableTSource, FuncTSource, TKey),
            where each element is its key, and TakeTSource(IEnumerableTSource, Int32)
            in a single operation. | 
| PartialSortT(IEnumerableT, Int32, OrderByDirection) | Combines OrderByT, TKey(IEnumerableT, FuncT, TKey, IComparerTKey, OrderByDirection),
            where each element is its key, and TakeTSource(IEnumerableTSource, Int32)
            in a single operation.
            An additional parameter specifies the direction of the sort | 
| PartialSortT(IEnumerableT, Int32, IComparerT) | Combines OrderByTSource, TKey(IEnumerableTSource, FuncTSource, TKey, IComparerTKey),
            where each element is its key, and TakeTSource(IEnumerableTSource, Int32)
            in a single operation. An additional parameter specifies how the
            elements compare to each other. | 
| PartialSortT(IEnumerableT, Int32, IComparerT, OrderByDirection) | Combines OrderByT, TKey(IEnumerableT, FuncT, TKey, IComparerTKey, OrderByDirection),
            where each element is its key, and TakeTSource(IEnumerableTSource, Int32)
            in a single operation.
            Additional parameters specify how the elements compare to each other and
            the direction of the sort. |