{

"resourceType": "ResearchDefinition",
"id": "example",
"status": "draft",
"population": {
  "reference": "ResearchElementDefinition/example"
},
"meta": {
  "tag": [
    {
      "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
      "code": "HTEST",
      "display": "test health data"
    }
  ]
}

}