public static IAIExtension<SmartAutoCompleteRequest, TextResponse> CreateSmartAutoCompleteExtension(
    this IAIExtensionsContainer container,
    string name = null
)

<ExtensionAttribute>
Public Shared Function CreateSmartAutoCompleteExtension(
    container As IAIExtensionsContainer,
    name As String = Nothing
) As IAIExtension(Of SmartAutoCompleteRequest, TextResponse)

IAIExtension<SmartAutoCompleteRequest, TextResponse> extension = AIIntegration.CreateSmartAutoCompleteExtension(defaultAIExtensionsContainer);
await ExecuteAIExtension(extension, new SmartAutoCompleteRequest("Hello"));

async Task ExecuteAIExtension<TRequest>(IAIExtension<TRequest, TextResponse> extension, TRequest request) {
    var result = await extension.ExecuteAsync(request, CancellationToken.None);
    Console.WriteLine(result);
}

Dim extension As IAIExtension(Of SmartAutoCompleteRequest, TextResponse) = AIIntegration.CreateSmartAutoCompleteExtension(defaultAIExtensionsContainer)
Await ExecuteAIExtension(extension, New SmartAutoCompleteRequest("Hello"))

Async Function ExecuteAIExtension(Of TRequest)(ByVal extension As IAIExtension(Of TRequest, TextResponse), ByVal request As TRequest) As Task
    Dim result = Await extension.ExecuteAsync(request, CancellationToken.None)
    Console.WriteLine(result)
End Function