azure-functions-csharp - TypeError: request.UpdateSignatureParameters is not a function

[sanjaypatil22]

Troubleshooting:

• Did you try autorest --reset and attempt again? Yes/No? Yes

Setup (please complete the following information): **

• OS: [e.g. macOS, Windows, Linux] : Windows
• OS Version: [e.g. Ubuntu 1604, macOS 10.15, ...] : Windows 10
• Mode: [VSCode or Autorest on CLI]: Autorest on CLI
• If VSCode, VSCode extension version:
• Language to be generated: ? Csharp
• Autorest Core version: Please paste the output of autorest --version if possible. 3.0.6320

Describe the bug

Getting error while generating csharp code for Azure Functions for the openAPI defination given as input.

To Reproduce

Run autorest command - autorest --azure-functions-csharp --input-file:./Source/petstore-expanded.json --output-folder:./Generated --namespace:SampleApi.PetStore --version:3.0.6320 --verbose

Sample File attached Refer this file as input. https://github.com/OAI/OpenAPI-Specification/blob/main/examples/v2.0/json/petstore-expanded.json

Stacktrace FATAL: TypeError: request.updateSignatureParameters is not a function

Click to expand the full stacktrace

FATAL: TypeError: request.updateSignatureParameters is not a function Error: Plugin grouper reported failure.

Additional context Add any other context about the problem here.