To update a split it needs to be "patched" as described in the ([docu](https://learn.microsoft.com/en-us/xandr/digital-platform-api/splits-service)). The anxapi module does not offer a method "PATCH": <img width="553" alt="image" src="https://github.com/appnexus/anx-api/assets/15980546/dd6e7b36-4228-4fa3-a59e-8ec2c0f814e8">