Allows the user to inspect tokens with the specified viewer.
Inspection can be done interactively, allowing the user to drop tokens, or non-interactively, with the viewer updating whenever a token passes through.
Of course, this actor should only be used during development for debugging purposes as can slow down the execution significantly depending on how expensive the view generation is.

Additional information

Flow input/output:
- input: java.lang.Object
- output: java.lang.Object

Interactive actor information:
- supports interaction in headless mode: false