Test This example assumes using AI21; is in scope and apiKey contains your AI21 API key. 1 2 3 4 5 6 7 8 9 10 11 12 13using var api = GetAuthorizedClient(); // await api.Completion.V1J2UltraCompleteAsync( // messages: // [ // new ChatMessage // { // Text = "Hello", // Role = RoleType.User, // } // ], // system: string.Empty, // cancellationToken: CancellationToken.None);