Use Empty instead of Void for argument

[yangtools.git] / yang / yang-model-api / src / main / java / org / opendaylight / yangtools / yang / model / api / meta / ModelStatement.java

diff --git a/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/meta/ModelStatement.java b/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/meta/ModelStatement.java
index 0adbc6aba5976f8dd73ad7a3e5f31328bbfbf4d2..36aacd7998684969a656bf220c201c2ac7af3f3e 100644 (file)
--- a/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/meta/ModelStatement.java
+++ b/yang/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/meta/ModelStatement.java
@@ -8,6 +8,7 @@
 package org.opendaylight.yangtools.yang.model.api.meta;
 
 import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.yang.common.Empty;
 
 /**
  * Model statement. There are two base types of model statements:
@@ -25,7 +26,7 @@ import org.eclipse.jdt.annotation.NonNull;
  * </li>
  * </ul>
  *
- * @param <A> Argument type ({@link Void} if statement does not have argument.)
+ * @param <A> Argument type ({@link Empty} if statement does not have argument.)
  */
 public interface ModelStatement<A> {
     /**
@@ -38,9 +39,9 @@ public interface ModelStatement<A> {
     /**
      * Returns statement argument.
      *
-     * @return statement argument or null if statement does not have argument.
+     * @return statement argument.
      */
-    A argument();
+    @NonNull A argument();
 
     /**
      * Returns statement source, which denotes if statement was