presto-main/src/main/java/io/prestosql/metadata/HandleResolver.java/HandleResolver/resolverFor
class HandleResolver:    private MaterializedHandleResolver resolverFor(String id)
    {
        MaterializedHandleResolver resolver = handleResolvers.get(id);
        checkArgument(resolver != null, "No handle resolver for connector: %s", id);
        return resolver;
    }