original_string: public function exists(Event $event)
      {
          return $this->cache->store($this->store)->has($event->mutexName());
      }
code: public function exists(Event $event)
      {
          return $this->cache->store($this->store)->has($event->mutexName());
      }
code_tokens: public function exists ( Event $ event ) { return $ this -> cache -> store ( $ this -> store ) -> has ( $ event -> mutexName ( ) ) ; }
docstring: Determine if an event mutex exists for the given event.
  
  @param  \Illuminate\Console\Scheduling\Event  $event
  @return bool
docstring_tokens: Determine if an event mutex exists for the given event .