General example

{
  "resourceType": "SearchParameter",
  "id": "example",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: example</p><p><b>url</b>: <a>http://hl7.org/fhir/SearchParameter/example</a></p><p><b>version</b>: 1</p><p><b>name</b>: ID-SEARCH-PARAMETER</p><p><b>status</b>: draft</p><p><b>experimental</b>: true</p><p><b>date</b>: 23/10/2013</p><p><b>publisher</b>: Health Level Seven International (FHIR Infrastructure)</p><p><b>contact</b>: </p><p><b>useContext</b>: </p><p><b>jurisdiction</b>: United States of America (the) <span>(Details : {urn:iso:std:iso:3166 code 'US' = 'United States', given as 'United States of America (the)'})</span></p><p><b>purpose</b>: Need to search by identifier for various infrastructural cases - mainly retrieving packages, and matching as part of a chain</p><p><b>code</b>: _id</p><p><b>base</b>: Resource</p><p><b>type</b>: token</p><p><b>derivedFrom</b>: <a>http://hl7.org/fhir/SearchParameter/Resource-id</a></p><p><b>description</b>: Search by resource identifier - e.g. same as the read interaction, but can return included resources</p><p><b>expression</b>: id</p><p><b>xpath</b>: f:*/f:id</p><p><b>xpathUsage</b>: normal</p><p><b>comparator</b>: eq</p></div>"
  },
  "url": "http://hl7.org/fhir/SearchParameter/example",
  "version": "1",
  "name": "ID-SEARCH-PARAMETER",
  "status": "draft",
  "experimental": true,
  "date": "2013-10-23",
  "publisher": "Health Level Seven International (FHIR Infrastructure)",
  "contact": [
    {
      "name": "[string]",
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        }
      ]
    }
  ],
  "useContext": [
    {
      "code": {
        "system": "http://hl7.org/fhir/usage-context-type",
        "code": "focus"
      },
      "valueCodeableConcept": {
        "coding": [
          {
            "system": "http://hl7.org/fhir/variant-state",
            "code": "positive"
          }
        ]
      }
    }
  ],
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "urn:iso:std:iso:3166",
          "code": "US",
          "display": "United States of America (the)"
        }
      ]

  "resourceType" : "SearchParameter",
  "id" : "example",
  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "fhir"
  }],
  "url" : "http://hl7.org/fhir/SearchParameter/example",
  "version" : "1",
  "name" : "IDSEARCHPARAMETER",
  "title" : "ID-SEARCH-PARAMETER",
  "derivedFrom" : "http://hl7.org/fhir/SearchParameter/Resource-id",
  "status" : "draft",
  "experimental" : true,
  "date" : "2013-10-23",
  "publisher" : "HL7 International / FHIR Infrastructure",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/fiwg"
    }]
  }],
  "description" : "Search by resource identifier - e.g. same as the read interaction, but can return included resources",
  "useContext" : [{
    "code" : {
      "system" : "http://terminology.hl7.org/CodeSystem/usage-context-type",
      "code" : "focus"
    },
    "valueCodeableConcept" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/variant-state",
        "code" : "positive"
      }]

    }
  ],
  "purpose": "Need to search by identifier for various infrastructural cases - mainly retrieving packages, and matching as part of a chain",
  "code": "_id",
  "base": [
    "Resource"
  ],
  "type": "token",
  "derivedFrom": "http://hl7.org/fhir/SearchParameter/Resource-id",
  "description": "Search by resource identifier - e.g. same as the read interaction, but can return included resources",
  "expression": "id",
  "xpath": "f:*/f:id",
  "xpathUsage": "normal",
  "comparator": [
    "eq"
  ]

  }],
  "jurisdiction" : [{
    "coding" : [{
      "system" : "urn:iso:std:iso:3166",
      "code" : "US",
      "display" : "United States of America"
    }]
  }],
  "purpose" : "Need to search by identifier for various infrastructural cases - mainly retrieving packages, and matching as part of a chain",
  "code" : "_id",
  "aliasCode" : ["logical-id"],
  "base" : ["Resource"],
  "type" : "token",
  "expression" : "id",
  "processingMode" : "normal"

}