xrn = DummyXrn(xrn=xrn, type='slice')
slicename = xrn.pl_slicename()
slices = self.shell.GetSlices({'name': slicename}, ['slice_id'])
xrn = DummyXrn(xrn=xrn, type='slice')
slicename = xrn.pl_slicename()
slices = self.shell.GetSlices({'name': slicename}, ['slice_id'])