public static function getConfig($key = null, $default = null)
    {
        $key = self::KEY.(is_null($key) ? '' : '.'.$key);

        return config()->get($key, $default);
    }
public static function getConfig($key = null, $default = null)
    {
        $key = self::KEY.(is_null($key) ? '' : '.'.$key);

        return config()->get($key, $default);
    }
public static function getConfig ( $ key = null , $ default = null ) { $ key = self :: KEY . ( is_null ( $ key ) ? '' : '.' . $ key ) ; return config ( ) -> get ( $ key , $ default ) ; }
Get the seo config.

@param  string|null  $key
@param  mixed|null   $default

@return mixed
Get the seo config .