Make ConstraintMetaDefition attributes Optional

[yangtools.git] / yang / yang-model-util / src / main / java / org / opendaylight / yangtools / yang / model / util / RangeConstraintImpl.java

diff --git a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/RangeConstraintImpl.java b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/RangeConstraintImpl.java
index 8ed0ad973bb0936b4654fcc1eb46b67a5d63a83a..a25051a6543784b2298e157639284d9ecca11eb4 100644 (file)
--- a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/RangeConstraintImpl.java
+++ b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/RangeConstraintImpl.java
@@ -58,13 +58,13 @@ final class RangeConstraintImpl implements RangeConstraint, Immutable {
     }
 
     @Override
-    public String getErrorAppTag() {
-        return errorAppTag;
+    public Optional<String> getErrorAppTag() {
+        return Optional.ofNullable(errorAppTag);
     }
 
     @Override
-    public String getErrorMessage() {
-        return errorMessage;
+    public Optional<String> getErrorMessage() {
+        return Optional.ofNullable(errorMessage);
     }
 
     @Override