package Ġcom . example . we ath erm v vm . data . provider Ċ Ċ import Ġcom . example . we ath erm v vm . internal . Unit System Ċ Ċ interface ĠUnit Provider Ġ{ ĊĠĠĠ Ġfun Ġget Unit System (): ĠUnit System Ċ Ċ }