diff -r 000000000000 -r 40cabcdcd2be samples/sidemeanings/test/org/apidesign/sidemeanings/test/PublicAbstractTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/sidemeanings/test/org/apidesign/sidemeanings/test/PublicAbstractTest.java	Thu Oct 30 21:30:10 2014 +0100
@@ -0,0 +1,41 @@
+package org.apidesign.sidemeanings.test;
+
+import org.apidesign.sidemeanings.PublicAbstract;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class PublicAbstractTest {
+
+    @Test public void testCallTenDoubleIncrementOnDirtyAPI() {
+        // BEGIN: sidemeanings.PublicAbstract.Dirty.test
+        class DoubleIncrement extends PublicAbstract.Dirty {
+            int counter;
+
+            @Override
+            public void increment() {
+                counter += 2;
+            }
+        }
+        DoubleIncrement doubleIncr = new DoubleIncrement();
+        doubleIncr.incrementTenTimes();
+        Assert.assertEquals(20, doubleIncr.counter);
+        // END: sidemeanings.PublicAbstract.Dirty.test
+    }
+
+    @Test public void testCallTenDoubleIncrementOnCleanAPI() {
+        // BEGIN: sidemeanings.PublicAbstract.Clean.test
+        class DoubleIncrement extends PublicAbstract.Clean {
+            int counter;
+
+            @Override
+            protected void overridableIncrement() {
+                counter += 2;
+            }
+        }
+        DoubleIncrement doubleIncr = new DoubleIncrement();
+        doubleIncr.incrementTenTimes();
+        Assert.assertEquals(20, doubleIncr.counter);
+        // END: sidemeanings.PublicAbstract.Clean.test
+    }
+
+}