code: @Override
      public ComponentBuilder addSymbolicLink(String target, String linkTarget) throws IOException
      {
          checkTarget(target);
          checkTarget(linkTarget);
          FileBuilder fb = new FileBuilder(target, linkTarget);
          fileBuilders.add(fb);
          return fb;
      }
docs: Add symbolic link to package.
  @param target
  @param linkTarget
  @return
  @throws IOException