Assume paths `/foo` and `/bar` both have a Path Item Object that `$ref` the same external "complete" Path Item Object. If a Link Object now `operationRef`s the `get` Operation Object within that external Path Item Object, which request should the client construct? It could be both * `GET /foo` or * `GET /bar` Proposal: * Add restriction to Link Object that `operationRef` and `operationId` MUST NOT reference a reusable/multi-used Path Item Object * Possibly: require that the `operationRef` value "goes through" a Paths Object