Network Graph refactoring: renamed class AbstractNetworkGraph to NetworkGraphImpl

Change-Id: I433dc5bfd96fbb4385be7b7129f8189f8cfebcb1
diff --git a/src/test/java/net/onrc/onos/intent/MockNetworkGraph.java b/src/test/java/net/onrc/onos/intent/MockNetworkGraph.java
index ec0d54f..cde98f0 100644
--- a/src/test/java/net/onrc/onos/intent/MockNetworkGraph.java
+++ b/src/test/java/net/onrc/onos/intent/MockNetworkGraph.java
@@ -1,12 +1,12 @@
 package net.onrc.onos.intent;
 
-import net.onrc.onos.ofcontroller.networkgraph.AbstractNetworkGraph;
+import net.onrc.onos.ofcontroller.networkgraph.NetworkGraphImpl;
 import net.onrc.onos.ofcontroller.networkgraph.Link;
 import net.onrc.onos.ofcontroller.networkgraph.LinkImpl;
 import net.onrc.onos.ofcontroller.networkgraph.Switch;
 import net.onrc.onos.ofcontroller.networkgraph.SwitchImpl;
 
-public class MockNetworkGraph extends AbstractNetworkGraph {
+public class MockNetworkGraph extends NetworkGraphImpl {
 	public Switch addSwitch(Long switchId) {
 		SwitchImpl sw = new SwitchImpl(this, switchId);
 		switches.put(sw.getDpid(), sw);