code: private void copyDocFiles() {
          PackageDoc containingPackage = annotationTypeDoc.containingPackage();
          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(configuration, containingPackage);
              containingPackagesSeen.add(containingPackage);
          }
       }
docs: Copy the doc files for the current ClassDoc if necessary.