Example of current allergies list and List For extension

{
  "resourceType": "List",
  "id": "current-allergies",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n      <p>List prepared for Dr Adam Careful</p>\n      <p>Patient Peter Chalmers, DOB = Dec 25, 1974, MRN = 12345 (Acme Healthcare) has the following allergies</p>\n      <ul>\n        <li>cashew nut allergenic extract Injectable Product (<b>High</b>)</li>\n        <li>Allergenic extract, penicillin (high)</li>\n      </ul>\n    </div>"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/list-for",
      "valueReference": {
        "reference": "Patient/example",
        "display": "Dr Adam Careful"
      }
    }
  ],
  "status": "current",
  "mode": "working",
  "title": "Current Allergy List",
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "52472-8",
        "display": "Allergies and Adverse Drug Reactions"
      }
    ],
    "text": "Current Allergy List"
  },
  "date": "2015-07-14T23:10:23+11:00",
  "source": {
    "reference": "Patient/example"
  },
  "orderedBy": {
    "coding": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/list-order",
        "code": "entry-date"
      }
    ]
  },
  "entry": [
    {
      "item": {
        "reference": "AllergyIntolerance/example"
      }
    },
    {
      "item": {
        "reference": "AllergyIntolerance/medication"
      }
    }
  ]
}