Metadata pointing at a FHIR Document Bundle

{
  "resourceType" : "DocumentReference",
  "id" : "example-bundle",
  "meta" : {
    "security" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ActReason",
      "code" : "HTEST"
    },
    {
      "system" : "http://terminology.hl7.org/CodeSystem/v3-Confidentiality",
      "code" : "N"
    }]
  },
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:uuid:0c3151bd-1cbf-4d64-b04d-cd9187a4c6e0"
  }],
  "status" : "current",
  "type" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "28655-9"
    }]
  },
  "subject" : {
    "reference" : "http://fhir.healthintersections.com.au/open/Patient/d1",
    "display" : "Eve Everywoman"
  },
  "event" : [{
    "reference" : {
      "reference" : "http://fhir.healthintersections.com.au/open/Encounter/doc-example"
    }
  }],
  "date" : "2013-02-01T12:30:02Z",
  "author" : [{
    "reference" : "Practitioner/example",
    "display" : "Doctor Dave"
  }],
  "description" : "Discharge Summary",
  "securityLabel" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/v3-Confidentiality",
      "code" : "N"
    }]
  }],
  "content" : [{
    "attachment" : {
      "url" : "Bundle/father"
    }
  }]
}