public static Aggregator<U, T> Create<U, T, TAccumulator>(
	bool emptyHasValue = false
)
where TAccumulator : struct, new(), IAccumulator<U, T>

Public Shared Function Create(Of U, T, TAccumulator As {Structure, New, IAccumulator(Of U, T)}) ( 
	Optional emptyHasValue As Boolean = false
) As Aggregator(Of U, T)

public:
generic<typename U, typename T, typename TAccumulator>
where TAccumulator : value class, gcnew(), IAccumulator<U, T>
static Aggregator<U, T>^ Create(
	bool emptyHasValue = false
)

static member Create : 
        ?emptyHasValue : bool 
(* Defaults:
        let _emptyHasValue = defaultArg emptyHasValue false
*)
-> Aggregator<'U, 'T>  when 'TAccumulator : struct, new() and IAccumulator<'U, 'T>