from sfa.util.xrn import Xrn
-from sfa.util.plxrn import PlXrn
from sfa.util.xml import XmlElement
+
from sfa.rspecs.elements.element import Element
from sfa.rspecs.elements.sliver import Sliver
from sfa.rspecs.elements.versions.sfav1PLTag import SFAv1PLTag
+from sfa.planetlab.plxrn import PlXrn
+
class SFAv1Sliver:
@staticmethod