code: public static void acceptsStoreMultiple(OptionParser parser) {
          parser.acceptsAll(Arrays.asList(OPT_S, OPT_STORE), "store name list")
                .withRequiredArg()
                .describedAs("store-name-list")
                .withValuesSeparatedBy(',')
                .ofType(String.class);
      }
docs: Adds OPT_S | OPT_STORE option to OptionParser, with one argument.
  
  @param parser OptionParser to be modified
  @param required Tells if this option is required or optional