Its been moved to the TypeImportList, which better reflects its position in the syntax.
So if we have an import statement:
import java "Order" as Order, "Confirmation" as Confirm from "org.example.data";
the format (i.e. 'java') and the location (i.e. "org.example.data") is associated with the TypeImportList, and the actual data type and the alias are defined in a list of TypeImport objects.