tree 0d1c9259da32c5d25abe4d0520bcdefd494f4f9e
parent a7827bb4d6cedaedf3e4e3a812cb2b5ebac41534
author Yuta HIGUCHI <y-higuchi@onlab.us> 1409352783 -0700
committer Saurav Das <sauravdas@alumni.stanford.edu> 1409942845 -0700

Topology related util class.

- We may need them to adapt Immutable*Topology as Mutable*Topology.

Part of ONOS-1925

Change-Id: I5782ef9f9b9441946b112e374a87059ab0a0df01