http://hl7.org/fhir/StructureDefinition/valueset-author|5.2.0

The entity or set of entities that create and may modify the Value Set Definition content. The name of a group or an individual, along with contact details.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/ContactDetail