public static SubFlow<TOut2, TMat3, TClosed> MergeMaterialized<TOut1, TOut2, TMat, TMat2, TMat3, TClosed>(
	this SubFlow<TOut1, TMat, TClosed> flow,
	IGraph<SourceShape<TOut2>, TMat2> that,
	Func<TMat, TMat2, TMat3> combine
)
where TOut1 : TOut2

[<ExtensionAttribute>]
static member MergeMaterialized : 
        flow : SubFlow<'TOut1, 'TMat, 'TClosed> * 
        that : IGraph<SourceShape<'TOut2>, 'TMat2> * 
        combine : Func<'TMat, 'TMat2, 'TMat3> -> SubFlow<'TOut2, 'TMat3, 'TClosed>  when 'TOut1 : 'TOut2