description: This cross-version extension represents ImplementationGuide.definition.page.name[x] from http://hl7.org/fhir/StructureDefinition/ImplementationGuide|4.0.1 for use in FHIR R5. package_name: hl7.fhir.uv.xver-r4.r5 derivation: constraint name: ext_R4_ImplementationGuide_de_pa_name type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Where to find that page choices: [valueUrl, valueReference] index: 1 valueUrl: base: {path: 'Extension.value[x]'} type: url short: Where to find that page choiceOf: value index: 2 valueReference: short: Where to find that page refers: ['http://hl7.org/fhir/StructureDefinition/Binary'] type: Reference base: {path: 'Extension.value[x]'} choiceOf: value index: 3 url: pattern: {type: Uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-ImplementationGuide.definition.page.name'} index: 4 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/4.0/StructureDefinition/extension-ImplementationGuide.definition.page.name base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]