http://hl7.org/fhir/StructureDefinition/elementdefinition-equivalence|5.2.0

The level of equivalence between the element containing the mapping and the element mapped to.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/code
Extension.value[x].binding.valueSethttp://hl7.org/fhir/ValueSet/concept-map-equivalence