$apply produces invalid references

[rdingwell]

In the resulting CarePlan that is produced from the $apply operation there are potentially a number of contained resources that are produced and included in the CarePlan. These resources may also have a need to reference other contained resources in the CarePlan. Currently, when this occurs invalid references are generated. Below is an example of the output I received in the contained RequestGroup in the CarePlan that was generated from a PlanDefinition. The action makes reference to another contained RequestGroup with the id EN-1-EN-1. This should be #EN-1-EN-1.

Per the fhir specification: When a contained resource references its container or another contained resource within its container, it must always be a local relative reference (i.e. it must be or start with '#')

"action": [
                {
                    "id": "EN-1",
                    "title": "Enrollment",
                    "description": "Initial enrollment visit for patient screening and inclusion",
                    "relatedAction": [
                        {
                            "actionId": "EN-1",
                            "relationship": "concurrent",
                            "offsetDuration": {
                                "value": 0,
                                "system": "http://unitsofmeasure.org",
                                "code": "mo"
                            }
                        }
                    ],
                    "resource": {
                        "reference": "EN-1-EN-1"
                    }
  },