EvenFilter is a middle node that reads the numbers from the input channel and only forwards those that are Even.

Messager is a middle node that forwards each string received from the input channel, prepending the given message.

OddFilter is a Middle Node that reads the numbers from the input channel and only forwards those that are Odd.

Printer is a Terminal Node that just prints each string received by its input channel.

StartCounter is a Start Node that generates some ordered numbers each 100 milliseconds.

StartRandoms is a Start Node that generates some random numbers each 150 milliseconds.