bi-directional streaming calls with extra options

[alexander-fenster]

Based on the discussion here:

- return this.innerApiCalls.listen(options);
+ return this.innerApiCalls.listen({}, options);

@schmidt-sebastian wrote:

I do think the generated code is busted here. We use options to set an additional header, but the way this gets passed down here is as the request (if I remember this correctly). If we don't modify the code, the header is dropped. This only affects bidirectional streaming APIs with additional metadata, so probably just us. I do think we should fix this upstream at some point.

We need to figure out what's wrong there, and fix it in the generator.

[alexander-fenster]

Looks like #1066 fixes this one?

[summer-ji-eng]

Looks like #1066 fixes this one?

Looks like #1066 fixes this one?

Yes. Thanks for reference. Merge now. Will release new version with this change after Jan 2022 due to the code freeze policy.