@Retention(value=RUNTIME)
@Target(value=METHOD)
public @interface CatchUnknown
Defines a method that should receive any unknown command for the related root command.
For example, if a BaseCommand /foo has a method with this, and /foo someunknowncommand is used
If a method is tagged with this annotation, it will catch unknown commands and let you react to them.
Only one instance of this annotation can be used per root command.