# attributes: @Ref names a registry - there is no registry Vendorz, nor Shops (both are reported)
program R {
  property Vendor { key: string = "" }
  registry Vendors of Vendor
  property Tool {
    @Ref(Vendorz) seller: int = 0
    @Ref(Shops) shop: int = 0
  }
  entry { print(VENDORS_COUNT) }
}