code: private void loadChildren() throws CmsException {
  
          for (CmsResource resource : new ArrayList<CmsResource>(m_knownResources)) {
              if (resource.isFolder()) {
                  if (!m_mustLoadChildren.contains(resource)) {
                      continue;
                  }
                  List<CmsResource> children = getChildren(resource);
                  for (CmsResource child : children) {
                      m_knownResources.add(child);
                      m_childMap.put(resource, child);
                  }
              }
          }
      }
docs: Loads the children of the already loaded resources.<p>
  
  @throws CmsException if something goes wrong