Grounding Web with Gemini Flash 2.0 - google_search field instead of google_search_retrieval

[fatihyildizhan]

Hello,

I get the following error in the grounding web sample with Gemini Flash 2.0. How can I make this request with C# .Net 8?
Thank you for your time.

Error message:
Status(StatusCode="InvalidArgument", Detail="Unable to submit request because Please use google_search field instead of google_search_retrieval field.. Learn more: https://cloud.google.com/vertex-ai/generative-ai/docs/model-reference/gemini")

Sample:
https://github.com/GoogleCloudPlatform/dotnet-docs-samples/blob/main/aiplatform/api/AIPlatform.Samples/GroundingWebSample.cs#L57

var generateContentRequest = new GenerateContentRequest
{
    Model = $"projects/{projectId}/locations/{location}/publishers/{publisher}/models/{model}",
    GenerationConfig = new GenerationConfig
    {
        Temperature = 0.0f
    },
    Contents =
    {
        new Content
        {
            Role = "USER",
            Parts = { new Part { Text = "When is the next total solar eclipse in US?" } }
        }
    },
    Tools =
    {
        new Tool
        {
            GoogleSearchRetrieval = new GoogleSearchRetrieval()
        }
    }
};