[ONOS-5482][ONOS-5275] Yms Operation requirement Implementation in onos-yang-tools

Change-Id: I463ed105f85ca65a61ff251e5ca062903d465551
diff --git a/generator/src/main/java/org/onosproject/yangutils/linker/impl/XpathLinkingTypes.java b/generator/src/main/java/org/onosproject/yangutils/linker/impl/XpathLinkingTypes.java
new file mode 100644
index 0000000..87e7fae
--- /dev/null
+++ b/generator/src/main/java/org/onosproject/yangutils/linker/impl/XpathLinkingTypes.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.yangutils.linker.impl;
+
+/**
+ * Represents x path linking types.
+ */
+public enum XpathLinkingTypes {
+
+    // Augment path linking.
+    AUGMENT_LINKING,
+
+    // Leaf ref path linking.
+    LEAF_REF_LINKING,
+
+    // Compiler annotation linking.
+    COMPILER_ANNOTATION_LINKING
+}