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>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>"

  "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>"

  },
  "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"

  "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"

  "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"
      }
    ]

  "orderedBy" : {
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/list-order",
      "code" : "entry-date"
    }]

  },
  "entry": [
    {
      "item": {
        "reference": "AllergyIntolerance/example"
      }
    },
    {
      "item": {
        "reference": "AllergyIntolerance/medication"
      }

  "entry" : [{
    "item" : {
      "reference" : "AllergyIntolerance/example"

    }
  ]

  },
  {
    "item" : {
      "reference" : "AllergyIntolerance/medication"
    }
  }]

}