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src/test/java/org/apache/commons/collections4/list/DefaultAbstractLinkedListForJava21Test.java

@@ -37,6 +37,13 @@ private static class DefaultAbstractLinkedListForJava21<E> extends AbstractLinke
             init();
         }
 
+        /**
+         * Deserializes an instance from an ObjectInputStream.
+         *
+         * @param in The source ObjectInputStream.
+         * @throws IOException            Any of the usual Input/Output related exceptions.
+         * @throws ClassNotFoundException A class of a serialized object cannot be found.
+         */
         private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException {
             in.defaultReadObject();
             doReadObject(in);