code: public function next()
      {
          if ($this->getCount() == $this->intCursor) {
              return false;
          }
          // We must advance over the last element.
          $this->intCursor += 1;
  
          // Check the index again, see #461.
          return ($this->getCount() == $this->intCursor) ? false : $this;
      }
docs: {@inheritdoc}