import sys
from types import StringTypes
-from sfa.util.xrn import get_leaf, get_authority, hrn_to_urn, urn_to_hrn
+from sfa.util.xrn import Xrn, get_leaf, get_authority, hrn_to_urn, urn_to_hrn
from sfa.util.plxrn import hrn_to_pl_slicename, hrn_to_pl_login_base
from sfa.util.rspec import *
from sfa.util.specdict import *