Is BeMedicationRequest based on HL7-EU MedicationRequestEuMpd or on HL7 MedicationRequest? FYI: - MedicationRequestEuMpd: https://build.fhir.org/ig/hl7-eu/mpd/StructureDefinition-MedicationRequest-eu-mpd.html - MedicationRequest: https://hl7.org/fhir/R4/medicationrequest.html