Request: Generating tokens programmatically

[rogerthatdev]

This is a request for a C# sample covering generating tokens programmatically as seen here: https://cloud.google.com/functions/docs/securing/authenticating#generating_tokens_programmatically

Based on sample feedback b/254628857

[amanda-tarafa]

We have a sample like that already:
https://github.com/GoogleCloudPlatform/dotnet-docs-samples/blob/main/identity-aware-proxy/IAPClient/IAPClient.cs

The sample is for connecting to an IAP client so, the target audience is an IAP client ID, but the code would be exactly the same to connect to anything else. Not sure if we should duplicate this code for Functions or maybe make some minor changes so that we can reuse the same sample in both places.

@jskeet what do you think?

[jskeet]

I think it would probably make sense to have a Functions-specific one, if it's not too hard. The aspects of "the function URI is the audience" would be useful to include there.