code: @Deprecated
      public Map<RequestMatcher, List<PortletFilter>> getFilterChainMap() {
          LinkedHashMap<RequestMatcher, List<PortletFilter>> map =  new LinkedHashMap<RequestMatcher, List<PortletFilter>>();
  
          for (PortletSecurityFilterChain chain : filterChains) {
              map.put(((DefaultPortletSecurityFilterChain)chain).getRequestMatcher(), chain.getFilters());
          }
  
          return map;
      }
docs: Returns a copy of the underlying filter chain map. Modifications to the map contents
  will not affect the PortletFilterChainProxy state.
  
  @return the map of path pattern Strings to filter chain lists (with ordering guaranteed).
  @deprecated use the list of {@link org.jasig.springframework.security.portlet.PortletSecurityFilterChain}s instead