Logic to check the resource type of focus references is broken and requires capabilities in R4B and beyond #16
Description
Currently, these tests attempt to check that instances that are the focus of a event-notification (when full-resource or id-only) are appropriate vis-a-vis the Subscription. Because these tests currently focus on FHIR R4 and details of what resource types can be the focus of a notification are present in the SubscriptionTopic resource that isn't available in R4, the tests attempt to infer the resource type from the filter criteria. According to the details of the filter criteria format in the specification, this is not reliable.
Because checking focus resource types is not possible in R4 and this test kit only tests R4, the checks will be disabled. The infrastructure to perform the check will be left in place, but never triggered. If it is revisited when testing R4B or beyond, then it should be updated to get information from the SubscriptionTopic and handle the possibility of multiple focus types.