original_string: public function back()
      {
          $this->getDriver()->curl($this->getDriver()->factoryCommand('back', WebDriver_Command::METHOD_POST));
          return $this;
      }
code: public function back()
      {
          $this->getDriver()->curl($this->getDriver()->factoryCommand('back', WebDriver_Command::METHOD_POST));
          return $this;
      }
code_tokens: public function back ( ) { $ this -> getDriver ( ) -> curl ( $ this -> getDriver ( ) -> factoryCommand ( 'back' , WebDriver_Command :: METHOD_POST ) ) ; return $ this ; }
docstring: Navigate backwards in the browser history, if possible.
docstring_tokens: Navigate backwards in the browser history if possible .