/// <summary>
 /// Get null value that is expected to be base64url encoded
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 public static byte[] GetNullBase64UrlEncoded(this IStringModel operations)
 {
     return(operations.GetNullBase64UrlEncodedAsync().GetAwaiter().GetResult());
 }