code: func (p *pathObject) FollowR(path *pathObject) *pathObject {
  	return p.follow(path, true)
  }
docs: // FollowR is the same as Follow but follows the chain in the reverse direction. Flips "In" and "Out" where appropriate,
  // the net result being a virtual predicate followed in the reverse direction.
  //
  // Starts at the end of the morphism and follows it backwards (with appropriate flipped directions) to the g.M() location.
  //
  // Example:
  // 	// javascript:
  //	var friendOfFriend = g.Morphism().Out("<follows>").Out("<follows>")
  //	// Returns the third-tier of influencers -- people who follow people who follow the cool people.
  //	// Returns charlie (from bob), charlie (from greg), bob and emily
  //	g.V().Has("<status>", "cool_person").FollowR(friendOfFriend).All()