description: Extension in CapabilityStatement stating the location of the FHIRcast hub to be used with this FHIR server. package_name: hl7.fhir.uv.fhircast derivation: constraint name: FHIRcastConfigurationExtension type: Extension elements: extension: index: 0 slicing: slices: hubUrl: match: {} schema: mustSupport: true _required: true index: 1 extensions: {} elements: extension: {index: 2} url: pattern: {type: Uri, value: hub.url} mustSupport: true index: 3 value: choices: [valueUrl] index: 5 valueUrl: {type: url, choiceOf: value, index: 6} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/fhircast/StructureDefinition/fhircast-configuration-extension'} index: 7 value: choices: [] index: 9 package_version: 3.0.0-ballot extensions: hubUrl: url: null mustSupport: true _required: true index: 1 extensions: {} elements: extension: {index: 2} url: pattern: {type: Uri, value: hub.url} mustSupport: true index: 3 value: choices: [valueUrl] index: 5 valueUrl: {type: url, choiceOf: value, index: 6} class: extension kind: complex-type url: http://hl7.org/fhir/uv/fhircast/StructureDefinition/fhircast-configuration-extension base: http://hl7.org/fhir/StructureDefinition/Extension version: 3.0.0-ballot required: [extension]