public function getParams()
{
// get the current parameters from the story
//
// NOTE that we deliberately don't cache $return in here, as
// the parameters storied in the story can (in theory) change
// at any moment
//
// NOTE that these are (deliberately) completely independent
// from anything set using -D on the command-line
//
// parameters are now simply a way for stories to pass settings
// into StoryTemplates that they are based upon, nothing more
return $this->getStory()->getParams();
}