http://hl7.org/fhir/StructureDefinition/cqf-alternativeExpression|5.2.0

Specifies an alternative, equivalent expression in another formal language. For example, given a condition expression in CQL, an alternative formulation in SQL could be provided.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/Expression