original_string: protected function queryString($key = null, $default = null, $deep = false)
      {
          return $key === null ? $this->getQueryString()->all() : $this->getQueryString()->get($key, $default, $deep);
      }
code: protected function queryString($key = null, $default = null, $deep = false)
      {
          return $key === null ? $this->getQueryString()->all() : $this->getQueryString()->get($key, $default, $deep);
      }
code_tokens: protected function queryString ( $ key = null , $ default = null , $ deep = false ) { return $ key === null ? $ this -> getQueryString ( ) -> all ( ) : $ this -> getQueryString ( ) -> get ( $ key , $ default , $ deep ) ; }
docstring: Returns a query string parameter by name.
  
  @param string $key     The key
  @param mixed  $default The default value if the parameter key does not exist
  @param bool   $deep    If true, a path like foo[bar] will find deeper items
  
  @return string
docstring_tokens: Returns a query string parameter by name .