⚠️ Correctly type properties on ErrorObject

[xavdid]

Why?

Our main API Error class has always been handwritten. As new fields have been added to api_errors in the spec over time (e.g. advice_code, network_advice_code, network_decline_code), we haven't picked them up in the SDKs.

This makes most of those properties generated so they stay in sync.

Warning

this is maybe a breaking change for PHP because the types weren't correctly marked as nullable before (so correct code will have to handle the null case in a way it didn't before). There's no runtime impact, but it could mess up type checkers.

What?

• Changes the properties on ErrorObject to be correctly nullable (pulling this data from the openapi spec).
• Adds section markers so codegen can maintain these fields going forward
• add tests

See Also

• RUN_DEVSDK-2568
• Error type is missing advice_code / network_advice_code / network_decline_code (present in the API on errors and last_payment_error) stripe-go#2384