original_string: protected function get_activity() {
          if ($this->activity === false) {
              $this->activity = $this->reorder_activities();
          }
          return $this->activity;
      }
code: protected function get_activity() {
          if ($this->activity === false) {
              $this->activity = $this->reorder_activities();
          }
          return $this->activity;
      }
code_tokens: protected function get_activity ( ) { if ( $ this -> activity === false ) { $ this -> activity = $ this -> reorder_activities ( ) ; } return $ this -> activity ; }
docstring: Returns the current activity if exists
  
  @return null|cm_info
docstring_tokens: Returns the current activity if exists