code: private void printSuggestion( String arg, List<ConfigOption> co ) {
          List<ConfigOption> sortedList = new ArrayList<ConfigOption>( co );
          Collections.sort( sortedList, new ConfigOptionLevenshteinDistance( arg ) );
          System.err.println( "Parse error for argument \"" + arg + "\", did you mean " + sortedList.get( 0 ).getCommandLineOption()
                  .showFlagInfo() + "? Ignoring for now." );
  
      }
docs: Prints a suggestion to stderr for the argument based on the levenshtein distance metric
  
  @param arg the argument which could not be assigned to a flag
  @param co the {@link ConfigOption} List where every flag is stored