code: static String[] mergePackages(String[] packages1, String[] packages2) {
      String[] all = new String[packages1.length + packages2.length];
      System.arraycopy(packages1, 0, all, 0, packages1.length);
      System.arraycopy(packages2, 0, all, packages1.length, packages2.length);
      return all;
    }
docs: Merge the packages to include in the enhancement (all other packages will now be ignored).