description: 'Where the server provides its web socket end-point. Note: this extension is deprecated because it''s poorly defined and is also over-constrained to just 1 occurrence. If there is a need for an extension like this as a common extension, please submit a change request and we will create one that is better defined, clear about its purpose, and has an appropriate cardinality.' package_name: hl7.fhir.uv.extensions derivation: constraint name: CSWebsocket type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/capabilitystatement-websocket'} type: uri index: 1 value: choices: [valueUri] index: 3 valueUri: {type: uri, choiceOf: value, index: 4} package_version: 5.3.0-ballot-tc extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/capabilitystatement-websocket base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot-tc required: [value, valueUri]