public static IQueryable<T2> ApplyPerPartition<T1, T2>(
	this IQueryable<T1> source,
	IQueryable<T1>[] otherSources,
	Expression<Func<IEnumerable<T1>[], IEnumerable<T2>>> applyFunc,
	bool isFirstOnly = false
)

<ExtensionAttribute> 
Public Shared Function ApplyPerPartition(Of T1, T2) ( 
	source As IQueryable(Of T1),
	otherSources As IQueryable(Of T1)(),
	applyFunc As Expression(Of Func(Of IEnumerable(Of T1)(), IEnumerable(Of T2))),
	Optional isFirstOnly As Boolean = false
) As IQueryable(Of T2)

public:
[ExtensionAttribute]
generic<typename T1, typename T2>
static IQueryable<T2>^ ApplyPerPartition(
	IQueryable<T1>^ source, 
	array<IQueryable<T1>^>^ otherSources, 
	Expression<Func<array<IEnumerable<T1>^>^, IEnumerable<T2>^>^>^ applyFunc, 
	bool isFirstOnly = false
)