{description: null, package_name: hl7.fhir.us.mdi, name: null, type: null, package_version: 2.0.0-snapshot1, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/mdi/MessageDefinition/MessageDefinition-toxicology-system', version: 2.0.0-snapshot1}