Summary

BaseApiClient.__del__ schedules aclose() as an async task during garbage collection (line 2118). By the time the task
executes, Python may have already partially destroyed the object, so attributes like _async_httpx_client,
_aiohttp_session, or _http_options may no longer exist. This causes unhandled AttributeError exceptions:

Task exception was never retrieved
future: <Task finished name='Task-2' coro=<BaseApiClient.aclose() done, ...>
  exception=AttributeError("'BaseApiClient' object has no attribute '_async_httpx_client'")>

Fix

Use getattr(self, ..., None) for all attribute accesses in aclose(), matching the defensive pattern already used by
close() (which guards with and self._httpx_client). This ensures aclose() is safe to call on a partially-destroyed
object.