public function getRequestFormat(string $default = 'html'): string
    {
        if (null === $this->format) {
            $this->format = $this->attributes->get('_format', $default);
        }

        return $this->format;
    }
public function getRequestFormat(string $default = 'html'): string
    {
        if (null === $this->format) {
            $this->format = $this->attributes->get('_format', $default);
        }

        return $this->format;
    }
public function getRequestFormat ( string $ default = 'html' ) : string { if ( null === $ this -> format ) { $ this -> format = $ this -> attributes -> get ( '_format' , $ default ) ; } return $ this -> format ; }
Gets the request format.

@param string $default The default format

@return string
Gets the request format .