public DemultiplexingPipelineStep(string name, IPipelineStep <TOutput> input, IPipelineStep <TSelect> select)
{
Name = name ?? throw new ArgumentNullException(nameof(name));
Input = input ?? throw new ArgumentNullException(nameof(input));
Select = select ?? throw new ArgumentNullException(nameof(select));
Signaler = Input.Signaler;
Signaler.RegisterMultiple(this, Input, Select);
Outputs = new Dictionary <TSelect, IPipelineStep <TOutput> >();
}
