description: Extension on Observation.component to provide a date time related to that component (in this case the feeding quantity). package_name: nictiz.fhir.nl.stu3.geboortezorg derivation: constraint name: bc-feedingpatterninfant-feedingdatetime type: Extension elements: url: pattern: {type: Uri, value: 'http://nictiz.nl/fhir/StructureDefinition/bc-feedingpatterninfant-feedingdatetime'} index: 0 valueDateTime: {type: dateTime, index: 1} package_version: 4.0.0-beta.1 class: extension kind: complex-type url: http://nictiz.nl/fhir/StructureDefinition/bc-feedingpatterninfant-feedingdatetime base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.0.0-beta.1