code: private void copyDocFiles() throws DocletException {
          PackageElement containingPackage = utils.containingPackage(annotationType);
          if((configuration.packages == null ||
              !configuration.packages.contains(containingPackage) &&
              !containingPackagesSeen.contains(containingPackage))){
              //Only copy doc files dir if the containing package is not
              //documented AND if we have not documented a class from the same
              //package already. Otherwise, we are making duplicate copies.
              utils.copyDocFiles(containingPackage);
              containingPackagesSeen.add(containingPackage);
          }
      }
docs: Copy the doc files for the current TypeElement if necessary.
  
  @throws DocletException if there is a problem building the documentation