Takes two streams and outputs one stream formed from the two input streams by first emitting all of the elements from the first stream and then emitting all of the elements from the second stream. A ConcatTIn, TOut has one multiple In(Int32) ports and one Out port.

Emits when the current stream has an element available; if the current input completes, it tries the next one

Backpressures when downstream backpressures

Completes when all upstreams complete

Cancels when downstream cancels

public class Concat<TIn, TOut> : GraphStage<UniformFanInShape<TIn, TOut>>
where TIn : TOut

type Concat<'TIn, 'TOut when 'TIn : 'TOut> =  
    class
        inherit GraphStage<UniformFanInShape<'TIn, 'TOut>>
    end