[ONOS-4718] Initial implementation of  LISP control message objects

Change-Id: I22cdb1a4b5d7bb7f0681c9fa9a45223b60bdb282
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 6021931..d187d88 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
@@ -17,6 +17,8 @@
 
 import io.netty.buffer.ByteBuf;
 
+import java.util.List;
+
 /**
  * Default LISP map notify message class.
  */
@@ -36,4 +38,67 @@
     public Builder createBuilder() {
         return null;
     }
+
+    @Override
+    public long getNonce() {
+        return 0;
+    }
+
+    @Override
+    public byte getRecordCount() {
+        return 0;
+    }
+
+    @Override
+    public short getKeyId() {
+        return 0;
+    }
+
+    @Override
+    public byte[] getAuthenticationData() {
+        return new byte[0];
+    }
+
+    @Override
+    public List<LispRecord> getLispRecords() {
+        return null;
+    }
+
+    public static final class DefaultNotifyBuilder implements NotifyBuilder {
+
+        @Override
+        public LispMessage build() {
+            return null;
+        }
+
+        @Override
+        public LispType getType() {
+            return null;
+        }
+
+        @Override
+        public NotifyBuilder withNonce(long nonce) {
+            return null;
+        }
+
+        @Override
+        public NotifyBuilder withRecordCount(byte recordCount) {
+            return null;
+        }
+
+        @Override
+        public NotifyBuilder withKeyId(short keyId) {
+            return null;
+        }
+
+        @Override
+        public NotifyBuilder withAuthenticationData(byte[] authenticationData) {
+            return null;
+        }
+
+        @Override
+        public NotifyBuilder addRecord(LispRecord record) {
+            return null;
+        }
+    }
 }