[ONOS-4650][ONOS-4726][ONOS-4727] [ONOS-4728]Implement must parser + when parser + feature + if-feature + revision defect fix
Change-Id: I0a3aee6c1c6b72ef7da7f7f565fd0f149fe3fd42
diff --git a/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangWhenHolder.java b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangWhenHolder.java
new file mode 100644
index 0000000..1c7df4d
--- /dev/null
+++ b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangWhenHolder.java
@@ -0,0 +1,37 @@
+/*
+ * 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.datamodel;
+
+/**
+ * Abstraction of when entity. It is used to abstract the data holders of when.
+ */
+public interface YangWhenHolder {
+
+ /**
+ * Returns the when.
+ *
+ * @return the when
+ */
+ YangWhen getWhen();
+
+ /**
+ * Sets the when.
+ *
+ * @param when the when to set
+ */
+ void setWhen(YangWhen when);
+}