Creates a SourceTOut, TMat that is materialized as an ISourceQueueWithCompleteT. You can push elements to the queue and they will be emitted to the stream if there is demand from downstream, otherwise they will be buffered until request for demand is received. Depending on the defined OverflowStrategy it might drop elements if there is no space available in the buffer. Acknowledgement mechanism is available. [!:ISourceQueueWithComplete<T>.OfferAsync] returns Task which completes with true if element was added to buffer or sent downstream. It completes with false if element was dropped. The strategy Backpressure will not complete [!:ISourceQueueWithComplete<T>.OfferAsync] until buffer is full. The buffer can be disabled by using bufferSize of 0 and then received messages are dropped if there is no demand from downstream. When bufferSize is 0 the overflowStrategy does not matter.

public static Source<T, ISourceQueueWithComplete<T>> Queue<T>(
	int bufferSize,
	OverflowStrategy overflowStrategy
)

static member Queue : 
        bufferSize : int * 
        overflowStrategy : OverflowStrategy -> Source<'T, ISourceQueueWithComplete<'T>>