{
  "resourceType": "DataElement",
  "id": "string",
  "meta": {
    "lastUpdated": "2017-04-18T21:44:43.294+00:00"
  },
  "url": "http://hl7.org/fhir/DataElement/string",
  "status": "draft",
  "experimental": true,
  "stringency": "fully-specified",
  "element": [
    {
      "id": "string",
      "path": "string",
      "short": "Primitive Type string",
      "definition": "A sequence of Unicode characters",
      "comment": "Note that FHIR strings may not exceed 1MB in size",
      "min": 0,
      "max": "*",
      "constraint": [
        {
          "key": "ele-1",
          "severity": "error",
          "human": "All FHIR elements must have a @value or children",
          "expression": "hasValue() | (children().count() > id.count())",
          "xpath": "@value|f:*|h:div",
          "source": "Element"
        }
      ]
    }
  ]
}