original_string: public function clear($key)
      {
          setcookie($key, '', time() - 3600);
          unset($_COOKIE[$key]);
          unset($this->store[$key]);
  
          return $this;
      }
code: public function clear($key)
      {
          setcookie($key, '', time() - 3600);
          unset($_COOKIE[$key]);
          unset($this->store[$key]);
  
          return $this;
      }
code_tokens: public function clear ( $ key ) { setcookie ( $ key , '' , time ( ) - 3600 ) ; unset ( $ _COOKIE [ $ key ] ) ; unset ( $ this -> store [ $ key ] ) ; return $ this ; }
docstring: Unset the key from the cookie
  
  @param string $key
  
  @return Cookie
docstring_tokens: Unset the key from the cookie