This is a basic generator to create simulations on the screen, useful to see how a template would work, etc., without risking sending data.
In short, it is a generator to display the data on the screen, as if you activated the flag
simulation and verbose in any of the other generators
If you take any use of the CLI, be it file, bash, realtime, etc.,
and use the --simulation flag, instead of executing the chosen FakeGenerator,
simulation will be used, which does not send or write anywhere, but displays in a screen
the result of the template and the configuration values
You have more info, flags and options in Terminal/Shell CLI usage