EHRBase using PUT in create EHR with UUID

From documentation (3.5. Technical Documentation — EHRbase documentation) It seems to imply that the functionality to create EHR with a given UUID is currently being merged into the createEHR method. I tried to pass the UUID as the subject in the ehrstatus with no luck (a completely new UUID is being used and returned).
Per spec creating an EHR method with UUID is a PUT operation. So tried to launch that operation directly. Even if I try to launch a PUT operation to that endpoint it gives me a 405 ‘method not allowed’ error. Is it currently possible to create an EHR with a given UUID in EHRBase? Can this be achieved with current default client implementation?

(All this was tested using both the defaultrestclient and extending it to use other HTTP methods such as PUT)