Have just moved my code over to HAPI 1.6 and STU3. Git = https://github.com/KevinMayfield/Jorvik
[Most of the changes came from moving from me.fhir->fhir-dstu2 maven libs to ca.uhn.hapi.fhir->hapi-fhir-structures-dstu3 which is distributing latest org.hl7.fhir.* libraries ]
Intending to look at importing UK Terminology next.
Has anyone else done this? This is using the hapi-cli tool http://hapifhir.io/doc_cli.html#Upload_Terminology
Also interested in code mapping imports