code: public List<CmsResource> getSubFolders(String resourcename) throws CmsException {
  
          return getSubFolders(resourcename, CmsResourceFilter.DEFAULT);
      }
docs: Returns all folder resources contained in a folder.<p>
  
  The result is filtered according to the rules of
  the <code>{@link CmsResourceFilter#DEFAULT}</code> filter.<p>
  
  @param resourcename the full current site relative path of the resource to return the child resources for.
  
  @return a list of all child file as <code>{@link CmsResource}</code> objects
  
  @throws CmsException if something goes wrong
  
  @see #getSubFolders(String, CmsResourceFilter)