question: public CommandBuilder withLongSwitchIfPresent ( Map < String , Object > properties , UnaryOperator < String > switchNameMapper , String ... keys ) { for ( String key : keys ) { withLongSwitchIfPresent ( properties , key , switchNameMapper . apply ( key ) ) ; } return this ; }
target:  if the given key(s) is present in the map, create a long switch (--switch) with the given transformation to create the switch name from the key