code: public static FlowControllerFactory get( ServletContext servletContext )
      {
          FlowControllerFactory factory = ( FlowControllerFactory ) servletContext.getAttribute( CONTEXT_ATTR );
          assert factory != null
                  : FlowControllerFactory.class.getName() + " was not found in ServletContext attribute " + CONTEXT_ATTR;
          factory.reinit( servletContext );
          return factory;
      }
docs: Get a {@link FlowControllerFactory}.  The instance returned may or may not have been cached.
  
  @param servletContext the current {@link ServletContext}.
  @return a {@link FlowControllerFactory} for the given {@link ServletContext}.