<?xml version=“1.0” encoding=“UTF-8”?> <SearchParameter xmlns=“hl7.org/fhir”>

      <id value="example"/>
      <meta>
  <security>
    <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/>
    <code value="HTEST"/>
    <display value="test health data"/>
  </security>
</meta>
<url value="http://hl7.org/fhir/SearchParameter/example"/>
      <version value="1"/>
      <name value="ID-SEARCH-PARAMETER"/>
      <derivedFrom value="http://hl7.org/fhir/SearchParameter/Resource-id"/>
      <status value="draft"/>
      <experimental value="true"/>
      <date value="2013-10-23"/>
      <publisher value="Health Level Seven International (FHIR Infrastructure)"/>
      <contact>
              <name value="[string]"/><!--   0..1 Name of an individual to contact   -->
              <telecom>
                      <system value="url"/>
                      <value value="http://hl7.org/fhir"/>
              </telecom>
      </contact>
      <description value="Search by resource identifier - e.g. same as the read interaction, but can return included resources"/>
      <useContext>
              <code>
                      <system value="http://terminology.hl7.org/CodeSystem/usage-context-type"/>
                      <code value="focus"/>
              </code>
              <valueCodeableConcept>
                      <coding>
                              <system value="http://terminology.hl7.org/CodeSystem/variant-state"/>
                              <code value="positive"/>
                      </coding>
              </valueCodeableConcept>
      </useContext>
      <jurisdiction>
              <coding>
                      <system value="urn:iso:std:iso:3166"/>
                      <code value="US"/>
                      <display value="United States of America (the)"/>
              </coding>
      </jurisdiction>

      <!--    this is the canonical definition for the _id search parameter     -->
      <purpose value="Need to search by identifier for various infrastructural cases - mainly retrieving packages, and matching as part of a chain"/>
      <code value="_id"/>
      <base value="Resource"/>
      <type value="token"/>
      <expression value="id"/>
      <xpath value="f:*/f:id"/>
      <xpathUsage value="normal"/>
      <comparator value="eq"/>

</SearchParameter>