Interleave is a deterministic merge of the given SourceTOut, TMat with elements of this IFlowTOut, TMat. It first emits segmentSize number of elements from this flow to downstream, then - same amount for graph source, then repeat process. After one of upstreams is complete than all the rest elements will be emitted from the second one If it gets error from one of upstreams - stream completes with failure. @seeInterleaveTIn, TOut. It is recommended to use the internally optimized LeftTLeft, TRight(TLeft, TRight) and RightTLeft, TRight(TLeft, TRight) combiners where appropriate instead of manually writing functions that pass through one of the values.

public static Flow<TIn, T2, TMat3> InterleaveMaterialized<TIn, T1, T2, TMat, TMat2, TMat3>(
	this Flow<TIn, T1, TMat> flow,
	IGraph<SourceShape<T2>, TMat2> graph,
	int segmentSize,
	Func<TMat, TMat2, TMat3> combine
)
where T1 : T2

[<ExtensionAttribute>]
static member InterleaveMaterialized : 
        flow : Flow<'TIn, 'T1, 'TMat> * 
        graph : IGraph<SourceShape<'T2>, 'TMat2> * 
        segmentSize : int * 
        combine : Func<'TMat, 'TMat2, 'TMat3> -> Flow<'TIn, 'T2, 'TMat3>  when 'T1 : 'T2