Update TypeDefinition design

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

diff --git a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/AbstractBaseType.java b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/AbstractBaseType.java
index 3d05a9b4bac4e073375b655bda921671f2cd12ee..8080b325746a43b040be8b9cc7953d8784b40c1f 100644 (file)
--- a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/AbstractBaseType.java
+++ b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/type/AbstractBaseType.java
@@ -32,13 +32,13 @@ abstract class AbstractBaseType<T extends TypeDefinition<T>> extends AbstractTyp
     }
 
     @Override
-    public final String getUnits() {
-        return null;
+    public final Optional<String> getUnits() {
+        return Optional.empty();
     }
 
     @Override
-    public final Object getDefaultValue() {
-        return null;
+    public final Optional<? extends Object> getDefaultValue() {
+        return Optional.empty();
     }
 
     @Override