Examples validated against schema

[roxspring]

API definitions allow schema objects to have an example, and response objects to have a list of examples. I think OpenAPI 3.0 allows examples in even more places. It seems obvious that Zally should be able to validate that these example match the defined schema. (Obviously a few preconditions might need to be applied - that we're dealing with json/xml mime types, maybe it only makes sense to validate the successful responses??)

Seemingly OpenAPI just builds up a json-schema for the structures, and Zally already does some schema validation, so all the pieces appear to be present. Has this been attempted and turns out to be difficult for reasons I haven't spotted? Or should this be easy to achieve and worth working on?