diff --git a/src/main/java/org/apache/commons/collections4/iterators/AbstractEmptyMapIterator.java b/src/main/java/org/apache/commons/collections4/iterators/AbstractEmptyMapIterator.java
index 446e4bb93..d6499a16e 100644
--- a/src/main/java/org/apache/commons/collections4/iterators/AbstractEmptyMapIterator.java
+++ b/src/main/java/org/apache/commons/collections4/iterators/AbstractEmptyMapIterator.java
@@ -31,15 +31,34 @@ public abstract class AbstractEmptyMapIterator<K, V> extends AbstractEmptyIterat
     public AbstractEmptyMapIterator() {
     }
 
+    /**
+     * Always throws IllegalStateException.
+     *
+     * @return Always throws IllegalStateException.
+     * @throws IllegalStateException Always thrown.
+     */
     public K getKey() {
         throw new IllegalStateException("Iterator contains no elements");
     }
 
+    /**
+     * Always throws IllegalStateException.
+     *
+     * @return Always throws IllegalStateException.
+     * @throws IllegalStateException Always thrown.
+     */
     public V getValue() {
         throw new IllegalStateException("Iterator contains no elements");
     }
 
-    public V setValue(final V value) {
+    /**
+     * Always throws IllegalStateException.
+     *
+     * @param ignored ignored. 
+     * @return Always throws IllegalStateException.
+     * @throws IllegalStateException Always thrown.
+     */
+    public V setValue(final V ignored) {
         throw new IllegalStateException("Iterator contains no elements");
     }