http://hl7.org/fhir/StructureDefinition/resource-instance-description|5.2.0

A natural language description for non-conformance and non-terminology resource instances that is represented in the resource for publication use.

element_id	types
Extension
Extension.extension
Extension.url
Extension.value[x]	markdown
Extension
Extension.id	http://hl7.org/fhirpath/System.String
Extension.extension	Extension
Extension.url	http://hl7.org/fhirpath/System.String
Extension.value[x]	markdown