[fixes #2682] Fix NPE, always add Javadoc return statement

test/transform/resource/after-delombok/WithMethodAbstract.java

@@ -1,5 +1,8 @@
 abstract class WithMethodAbstract {
 	String foo;
+	/**
+	 * @return a clone of this object, except with this updated property (returns {@code this} if an identical value is passed).
+	 */
 	@java.lang.SuppressWarnings("all")
 	public abstract WithMethodAbstract withFoo(final String foo);
 }