I tried to apply parser configuration e.g. disallow POSIX Clustered Short Option, but I don't know where to place the CommandLine.setPosixClusteredShortOptionsAllowed(false).

I want to keep it simple and straight forward as possible so I started with your README Example (Runnable) and added three boolean switches ... and now I want to achieve that the clustered version of them will result in an "unknown option" + usage (preferred without showing the options clustered)

I search in the documentation but didn't found an explanation.

I would prefer to have this parser configuration set globally for the whole application, but individually for each command would be okay as well.