code: func (g *Graph) Objects() []*Object {
  	objects := make([]*Object, 0, len(g.unnamed)+len(g.named))
  	for _, o := range g.unnamed {
  		if !o.embedded {
  			objects = append(objects, o)
  		}
  	}
  	for _, o := range g.named {
  		if !o.embedded {
  			objects = append(objects, o)
  		}
  	}
  	// randomize to prevent callers from relying on ordering
  	for i := 0; i < len(objects); i++ {
  		j := rand.Intn(i + 1)
  		objects[i], objects[j] = objects[j], objects[i]
  	}
  	return objects
  }
docs: // Objects returns all known objects, named as well as unnamed. The returned
  // elements are not in a stable order.