description: Interval in seconds to send 'heartbeat' notifications. package_name: hl7.fhir.uv.subscriptions-backport derivation: constraint name: BackportHeartbeatPeriod type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/subscriptions-backport/StructureDefinition/backport-heartbeat-period'} index: 1 value: short: Interval in seconds to send 'heartbeat' notification choices: [valueUnsignedInt] index: 3 valueUnsignedInt: {type: unsignedInt, short: Interval in seconds to send 'heartbeat' notification, choiceOf: value, index: 4} package_version: 1.1.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/uv/subscriptions-backport/StructureDefinition/backport-heartbeat-period base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.1.0