public static Task<TextResponse> ExpandAsync(
    this IAIExtensionsContainer container,
    ExpandRequest request,
    CancellationToken cancellationToken = default(CancellationToken)
)

<ExtensionAttribute>
Public Shared Function ExpandAsync(
    container As IAIExtensionsContainer,
    request As ExpandRequest,
    cancellationToken As CancellationToken = Nothing
) As Task(Of TextResponse)

using Azure;
using Azure.AI.OpenAI;
using Microsoft.Extensions.AI;
using DevExpress.AIIntegration;
using DevExpress.AIIntegration.Extensions;

SetEnvironmentVariables();

// Register an Azure OpenAI client
AIExtensionsContainerDefault defaultAIExtensionsContainer = RegisterAzureOpenAIClient(
    Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT"),
    Environment.GetEnvironmentVariable("AZURE_OPENAI_APIKEY")
);

string originalText = "The AI-powered expand extension enriches your text with additional information or in-depth explanations.";
var response = await defaultAIExtensionsContainer.ExpandAsync(
    new ExpandRequest(originalText)
);

Console.WriteLine(response);

AIExtensionsContainerDefault RegisterAzureOpenAIClient(string azureOpenAIEndpoint, string azureOpenAIKey) {
    IChatClient client = new Azure.AI.OpenAI.AzureOpenAIClient(new Uri(azureOpenAIEndpoint),
        new System.ClientModel.ApiKeyCredential(azureOpenAIKey)).GetChatClient("gpt-4o-mini").AsIChatClient();

    return AIExtensionsContainerConsole.CreateDefaultAIExtensionContainer(client);
}

void SetEnvironmentVariables() {
    Environment.SetEnvironmentVariable("AZURE_OPENAI_ENDPOINT", {SPECIFY_YOUR_AZURE_ENDPOINT});
    Environment.SetEnvironmentVariable("AZURE_OPENAI_APIKEY", {SPECIFY_YOU_AZURE_KEY});
}