code: protected boolean updateStrongLinks(CmsResource resource, CmsFlexController controller, Set<String> updatedFiles)
      throws CmsLoaderException, IOException, ServletException {
  
          int numberOfUpdates = updatedFiles.size();
          CmsObject cms = controller.getCmsObject();
          CmsRelationFilter filter = CmsRelationFilter.TARGETS.filterType(CmsRelationType.JSP_STRONG);
          Iterator<CmsRelation> it;
          try {
              it = cms.getRelationsForResource(resource, filter).iterator();
          } catch (CmsException e) {
              // should never happen
              if (LOG.isErrorEnabled()) {
                  LOG.error(e.getLocalizedMessage(), e);
              }
              return false;
          }
          while (it.hasNext()) {
              CmsRelation relation = it.next();
              CmsResource target = null;
              try {
                  target = relation.getTarget(cms, CmsResourceFilter.DEFAULT);
              } catch (CmsException e) {
                  // should never happen
                  if (LOG.isErrorEnabled()) {
                      LOG.error(e.getLocalizedMessage(), e);
                  }
                  continue;
              }
              // prevent recursive update when including the same file
              if (resource.equals(target)) {
                  continue;
              }
              // update the target
              updateJsp(target, controller, updatedFiles);
          }
          // the current jsp file should be updated only if one of the included jsp has been updated
          return numberOfUpdates < updatedFiles.size();
      }
docs: Updates all jsp files that include the given jsp file using the 'link.strong' macro.<p>
  
  @param resource the current updated jsp file
  @param controller the controller for the jsp integration
  @param updatedFiles the already updated files
  
  @return <code>true</code> if the given JSP file should be updated due to dirty included files
  
  @throws ServletException might be thrown in the process of including the JSP
  @throws IOException might be thrown in the process of including the JSP
  @throws CmsLoaderException if the resource type can not be read