ONOS-2486 Adding swagger-based REST API documentation.

Change-Id: I237d973d73549ad30ddc638c1c201f024d344c70
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/MainNavResource.java b/web/gui/src/main/java/org/onosproject/ui/impl/MainNavResource.java
index f134886..7f0af3a 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/MainNavResource.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/MainNavResource.java
@@ -15,6 +15,7 @@
  */
 package org.onosproject.ui.impl;
 
+import org.onosproject.rest.AbstractInjectionResource;
 import org.onosproject.ui.UiExtension;
 import org.onosproject.ui.UiExtensionService;
 import org.onosproject.ui.UiView;