original_string: public function getTab()
      {
          if (is_null($this->tab)) {
              $this->tab = new Tab($this);
          }
  
          return $this->tab;
      }
code: public function getTab()
      {
          if (is_null($this->tab)) {
              $this->tab = new Tab($this);
          }
  
          return $this->tab;
      }
code_tokens: public function getTab ( ) { if ( is_null ( $ this -> tab ) ) { $ this -> tab = new Tab ( $ this ) ; } return $ this -> tab ; }
docstring: Get Tab instance.
  
  @return Tab
docstring_tokens: Get Tab instance .