Transform this Source< TOut, TMat> by appending the given processing steps. The materialized value of the combined Source< TOut, TMat> will be the materialized value of the current flow (ignoring the other flow’s value), use ViaMaterialized< TOut2, TMat2, TMat3> (IGraph< FlowShape< TOut, TOut2> , TMat2> , Func< TMat, TMat2, TMat3> ) if a different strategy is needed.

public Source<T2, TMat> Via<T2, TMat2>(
	IGraph<FlowShape<TOut, T2>, TMat2> flow
)

member Via : 
        flow : IGraph<FlowShape<'TOut, 'T2>, 'TMat2> -> Source<'T2, 'TMat>