http://hl7.org/fhir/StructureDefinition/procedure-directedBy|5.2.0

The target of the extension is a distinct actor from the requester and has decision-making authority over the service and takes direct responsibility to manage the service.
element_idtypes
Extension
Extension.extension
Extension.url
Extension.value[x]
Extension
Extension.id
Extension.extension
Extension.url
Extension.value[x]