public static class MaxByExtension<ExtensionAttribute>
Public NotInheritable Class MaxByExtension[ExtensionAttribute]
public ref class MaxByExtension abstract sealed[<AbstractClassAttribute>]
[<SealedAttribute>]
[<ExtensionAttribute>]
type MaxByExtension = class end| MaxByTSource, TKey(IEnumerableTSource, FuncTSource, TKey) | Returns the maximal elements of the given sequence, based on
            the given projection. Obsolete. | 
| MaxByTSource, TKey(IEnumerableTSource, FuncTSource, TKey, IComparerTKey) | Returns the maximal elements of the given sequence, based on
            the given projection and the specified comparer for projected values. Obsolete. |