Spirometry Example referencing DeviceComponent

{
  "resourceType" : "Observation",
  "id" : "656",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Observation</b><a name=\"656\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource Observation &quot;656&quot; </p></div><p><b>identifier</b>: id: patientId-urn:oid:1.2.4~0000000000000000~152584~20170503155426~820</p><p><b>status</b>: final</p><p><b>code</b>: MDC_FLOW_AWAY_EXP_FORCED_PEAK <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/4.0.0/CodeSystem-v3-mdc.html\">ISO 11073-10101 Health informatics - Point-of-care</a>#152584)</span></p><p><b>subject</b>: <a href=\"broken-link.html\">Patient/PatientId-patientId</a></p><p><b>effective</b>: 2017-05-03T15:54:26-04:00</p><p><b>performer</b>: <a href=\"broken-link.html\">Patient/PatientId-patientId</a></p><p><b>value</b>: 820 cL/s<span style=\"background: LightGoldenRodYellow\"> (Details: urn:iso:std:iso:11073:10101 code 265201 = '265201')</span></p></div>"
  },
  "identifier" : [{
    "value" : "patientId-urn:oid:1.2.4~0000000000000000~152584~20170503155426~820"
  }],
  "status" : "final",
  "code" : {
    "coding" : [{
      "system" : "urn:iso:std:iso:11073:10101",
      "code" : "152584",
      "display" : "MDC_FLOW_AWAY_EXP_FORCED_PEAK"
    }]
  },
  "subject" : {
    "reference" : "Patient/PatientId-patientId"
  },
  "effectiveDateTime" : "2017-05-03T15:54:26-04:00",
  "performer" : [{
    "reference" : "Patient/PatientId-patientId"
  }],
  "valueQuantity" : {
    "value" : 820,
    "unit" : "cL/s",
    "system" : "urn:iso:std:iso:11073:10101",
    "code" : "265201"
  }
}