@Test public void testMaxDepth() { assertIntEquals(0, event1.maxDepth()); assertIntEquals(1, event2.maxDepth()); }
final int maxDepth() { return maxDepth(0); }
Event { final int maxDepth() { return maxDepth(0); } }
Event { final int maxDepth() { return maxDepth(0); } Event(); }
Event { final int maxDepth() { return maxDepth(0); } Event();  }
Event { final int maxDepth() { return maxDepth(0); } Event();   }