code: public Map<String, List<CmsRelation>> validateRelations(
          CmsObject cms,
          CmsPublishList publishList,
          I_CmsReport report) throws Exception {
  
          return m_securityManager.validateRelations(cms.getRequestContext(), publishList, report);
      }
docs: Validates the relations for the given resources.<p>
  
  @param cms the cms request context
  @param publishList the publish list to validate against the online project
  @param report a report to write the messages to
  
  @return a map with lists of invalid links
  (<code>{@link org.opencms.relations.CmsRelation}}</code> objects)
  keyed by root paths
  
  TODO: change return value to List of CmsRelation
  
  @throws Exception if something goes wrong