code: public PageFlowController createPageFlow( RequestContext context, String pageFlowClassName )
          throws ClassNotFoundException, InstantiationException, IllegalAccessException
      {
          Class pageFlowClass = getFlowControllerClass( pageFlowClassName );
          return createPageFlow( context, pageFlowClass );
      }
docs: Create a {@link PageFlowController} of the given type.  The {@link PageFlowController} stack used
  for nesting will be cleared or pushed, and the new instance will be stored as the current
  {@link PageFlowController}.
  
  @param context a {@link RequestContext} object which contains the current request and response.
  @param pageFlowClassName the type name of the desired page flow.
  @return the newly-created PageFlowController, or <code>null</code> if none was found.