<status value="active" /> <fhirVersion value="4.0.1" /> <kind value="primitive-type" /> <abstract value="false" /> <type value="dateTime" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/dateTime" /> <derivation value="constraint" /> <differential> <element id="dateTime.value"> <path value="dateTime.value" /> <mustSupport value="true" /> </element> </differential> </StructureDefinition>