[ONOS-4718] Add skeleton code for de-serializing LISP ctrl messages

Change-Id: I52f7905538e5832e5282812df869b8158ce23334
diff --git a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapNotify.java b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapNotify.java
index 7d55e1e..831065a 100644
--- a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapNotify.java
+++ b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapNotify.java
@@ -20,6 +20,7 @@
 import com.google.common.collect.Lists;
 import io.netty.buffer.ByteBuf;
 import org.onlab.util.ImmutableByteSequence;
+import org.onosproject.lisp.msg.exceptions.LispParseError;
 
 import java.util.List;
 
@@ -173,4 +174,15 @@
                     recordCount, mapRecords);
         }
     }
+
+    /**
+     * A private LISP message reader for MapNotify message.
+     */
+    private static class NotifyReader implements LispMessageReader<LispMapNotify> {
+
+        @Override
+        public LispMapNotify readFrom(ByteBuf byteBuf) throws LispParseError {
+            return null;
+        }
+    }
 }