public function summarise_action(question_attempt_step $step)
 {
     if ($step->has_behaviour_var('helpme')) {
         return $this->summarise_helpme($step);
     } else {
         return parent::summarise_action($step);
     }
 }
 public function summarise_action(question_attempt_step $step)
 {
     // Summarise hint action.
     foreach ($this->question->hints_available_for_student($step->get_qt_data()) as $hintkey) {
         $hintkey = $this->adjust_hintkey($hintkey);
         if ($step->has_behaviour_var($hintkey . 'btn')) {
             return $this->summarise_hint($step, $hintkey);
         }
     }
     return parent::summarise_action($step);
 }