Add invalid to client

[alvarolivie]

No description provided.

[Copilot]

Pull request overview

This PR adds a new error helper function IsInvalid to the invopop client package, which checks if a response error corresponds to an HTTP 422 Unprocessable Entity status. This complements the existing error helper functions for other HTTP status codes like Conflict, NotFound, and Forbidden.

• Adds IsInvalid() helper function for checking invalid request errors (HTTP 422)

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[pmenendz]

Not sure about this.

The other errors make sense because they are tightly related to the error code. But I am not entirely sure about relating isInvalid to the UnprocessableEntity error.

[samlown]

The other errors make sense because they are tightly related to the error code. But I am not entirely sure about relating isInvalid to the UnprocessableEntity error.

Agreed. I'd just use the same name (IsUnprocessable) but most likely there is a better abstraction here related to validation, which is what this response normally implies.