gen/openapi/python-asyncio-api_client.py.patch

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>     _pool = None
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<                  cookie=None):
---
>                  cookie=None, pool_threads=None):
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>         self.pool_threads = pool_threads
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<         self.pool = ThreadPool()
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<         self.pool.close()
<         self.pool.join()
---
>         if self._pool:
>             self._pool.close()
>             self._pool.join()
>             self._pool = None
> 
>     @property
>     def pool(self):
>         """Create thread pool on first request
>          avoids instantiating unused threadpool for blocking clients.
>         """
>         if self._pool is None:
>             self._pool = ThreadPool(self.pool_threads)
>         return self._pool