code: public void destroy()
      {
          super.destroy();
          if (isStarted())
              throw new IllegalStateException();
  
          _defaultsDescriptor=null;
          _war=null;
          _configurationClassNames=null;
          if (_resourceAliases!=null)
              _resourceAliases.clear();
          _resourceAliases=null;
          _contextListeners=null;
          if (_errorPages!=null)
              _errorPages.clear();
          _errorPages=null;
      }
docs: /* ------------------------------------------------------------