Make ConstraintMetaDefition attributes Optional

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

diff --git a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/JavaLengthConstraints.java b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/JavaLengthConstraints.java
index 75227153d2baaf7a51fa8c3320f5e4941b14c273..216728f9d1099e5e6b23f9a991c16915c8f3ca43 100644 (file)
--- a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/JavaLengthConstraints.java
+++ b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/JavaLengthConstraints.java
@@ -10,6 +10,7 @@ package org.opendaylight.yangtools.yang.model.util.type;
 import com.google.common.collect.ImmutableRangeSet;
 import com.google.common.collect.Range;
 import com.google.common.collect.RangeSet;
+import java.util.Optional;
 import org.opendaylight.yangtools.yang.model.api.type.LengthConstraint;
 
 final class JavaLengthConstraints {
@@ -27,13 +28,13 @@ final class JavaLengthConstraints {
         }
 
         @Override
-        public String getErrorMessage() {
-            return null;
+        public Optional<String> getErrorMessage() {
+            return Optional.empty();
         }
 
         @Override
-        public String getErrorAppTag() {
-            return null;
+        public Optional<String> getErrorAppTag() {
+            return Optional.empty();
         }
 
         @Override