public static IEnumerable<T> OrderedMerge<T, TKey>(
	this IEnumerable<T> first,
	IEnumerable<T> second,
	Func<T, TKey> keySelector
)

<ExtensionAttribute>
Public Shared Function OrderedMerge(Of T, TKey) ( 
	first As IEnumerable(Of T),
	second As IEnumerable(Of T),
	keySelector As Func(Of T, TKey)
) As IEnumerable(Of T)

public:
[ExtensionAttribute]
generic<typename T, typename TKey>
static IEnumerable<T>^ OrderedMerge(
	IEnumerable<T>^ first, 
	IEnumerable<T>^ second, 
	Func<T, TKey>^ keySelector
)

[<ExtensionAttribute>]
static member OrderedMerge : 
        first : IEnumerable<'T> * 
        second : IEnumerable<'T> * 
        keySelector : Func<'T, 'TKey> -> IEnumerable<'T>