[BUG] [python-nextgen]The method "parameters_to_url_query" throws an error when the input is of type List[int] because the join operation expects string types, but it is being applied to integers.

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

The method "parameters_to_url_query" throws an error when the input is of type List[int] because the join operation expects string types, but it is being applied to integers.

input is of type List[int]
Annotated[Optional[conlist(StrictInt)]

Run error

 File "xx\api_client.py", line 552, in <listcomp>
    return "&".join(["=".join(item) for item in new_params])
TypeError: sequence item 1: expected str instance, int found

api_client.py Lines of code

552 return "&".join(["=".join(item) for item in new_params])

Local modification valid
return "&".join(["=".join(str(item)) for item in new_params])

openapi-generator version

OpenAPI declaration file content or url

Generation Details

Steps to reproduce

Related issues/PRs

Suggest a fix

Start in api_client.py around line 552 and reproduce the failure with a List[int] input such as Annotated[Optional[conlist(StrictInt)]]. Verify the parameters_to_url_query path and confirm that integer values no longer trigger the reported TypeError when building the URL query.