Cross-Version Extension for SearchParameter.type in R4

Context of Use

This extension may be used in the following contexts:

Name	Flags	Card.	Type	Description & Constraints
Extension		1..1	Extension	number | date | string | token | reference | composite | quantity | uri | special
extension		..0
value[x]		1..	code
url				"http://hl7.org/fhir/4.0/StructureDefinition/extension-SearchParameter.type"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r4-spd.type",
  "url" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-SearchParameter.type",
  "name" : "XVerExtensionSearchParameter.typeR4",
  "title" : "Cross-Version Extension for SearchParameter.type in R4",
  "status" : "active",
  "experimental" : false,
  "publisher" : "Health Level Seven International (FHIR Infrastructure)",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    }]
  },
  {
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/fiwg/index.cfm"
    }]
  }],
  "description" : "Cross-Version Extension for SearchParameter.type. Valid in versions R2, R3\r\n\r\nThis is a valid extension because it has the following codes that are not in other versions special (http://hl7.org/fhir/4.0/search-param-type)",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001"
    }]
  }],
  "fhirVersion" : "5.0.0",
  "kind" : "complex-type",
  "abstract" : false,
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "number | date | string | token | reference | composite | quantity | uri | special",
      "definition" : "The type of value that a search parameter may contain, and how the content is interpreted.",
      "min" : 1,
      "max" : "1",
      "isModifier" : false
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "code" : "code"
      }]
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-SearchParameter.type"
    }]
  }
}