OperationId

Thanks for providing an `openapi.json` file to describe the REST API. I am trying to auto-generate a client based on the contents of the `openapi.json`. In my previous projects the method names were derived from the operation id but unfortunately there is no operation Id in the `openapi.json` in this repo.

It would be great if you could add it so that I do not need to fall-back to the `summary` which leads to method names like `CreateAnAttributeWithNameAttrAndAssignItToHDF5ObjectObjuudi` for the REST path `PUT /{collection}/{obj_uuid}/attributes/{attr}`. The operation ID for that path could be `CreateAttribute` or `create_attribute`.

Thank you :-)

Start by opening the repository's openapi.json and inspect the REST path PUT /{collection}/{obj_uuid}/attributes/{attr}, using its suggested CreateAttribute or create_attribute value as a reference. Check the other operations for the same missing field and confirm that each operation has a stable operation ID suitable for generated client method names.

Written by the indexing model from the issue text.