code: @Override
      public FilterManager getFilterManager(PortletWindow window, String lifeCycle) {
          FilterManagerImpl filterManager = new FilterManagerImpl(window, lifeCycle);
          return filterManager;
      }
docs: /* (non-Javadoc)
  @see org.apache.pluto.container.FilterManagerService#getFilterManager(org.apache.pluto.container.PortletWindow, java.lang.String)