18:30:37.022 [pool-63-thread-1] DEBUG o.o.b.p.t.p.ServerSessionManager - Topology DataObjectIdentifier[
  @ urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology
  ... network.topology.Topology[TopologyKey{topologyId=Uri{value=testtopo}}]
] removed