src/LINEBot.php
public function downloadRichMenuImage($richMenuId)
    {
        $url = sprintf('%s/v2/bot/richmenu/%s/content', $this->endpointBase, urlencode($richMenuId));
        return $this->httpClient->get($url);
    }
public function downloadRichMenuImage($richMenuId)
    {
        $url = sprintf('%s/v2/bot/richmenu/%s/content', $this->endpointBase, urlencode($richMenuId));
        return $this->httpClient->get($url);
    }
public function downloadRichMenuImage ( $ richMenuId ) { $ url = sprintf ( '%s/v2/bot/richmenu/%s/content' , $ this -> endpointBase , urlencode ( $ richMenuId ) ) ; return $ this -> httpClient -> get ( $ url ) ; }
Downloads an image associated with a rich menu.

@param string $richMenuId ID of an uploaded rich menu
@return Response
Downloads an image associated with a rich menu .