[codegen] Add SubscriptionItem.create_usage_record method

[ob-stripe]

r? @rattrayalex-stripe
cc @stripe/api-libraries

• Sanity check for correctness.
• Ensure appropriate test coverage (ie; write tests).

[ob-stripe]

Released as 2.35.0.

[rogerpine]

Is action='set' supported in create_usage_record? I only get the increment behavior. Set is meant to overwrite the full usage amount during the billing period.
Thank you.

[ob-stripe]

@rogerpine The library doesn't know about specific parameters, it simply passes parameters along to Stripe's API. So all parameters should be supported.

Are you observing an unexpected behavior when passing action='set'?

[rogerpine]

Yes, when I passed action='set', it was continuing to increment.

[remi-stripe]

@rogerpine set only works if you re-use the same timestamp for all your UsageRecords. If you pass a different timestamp each time it will still sum up to the total.

I'd recommend reaching out to our support team to discuss this instead: https://support.stripe.com/contact