code: public void addOption(@NonNull NamedOption namedOption) {
        options.put(namedOption.getName(), namedOption);
        optionSet.add(namedOption);
        if (namedOption.getAliases() != null) {
           for (String alias : namedOption.getAliases()) {
              options.put(alias, namedOption);
           }
        }
     }
docs: Add option.
  
  @param namedOption the named option