The cache has the same structure as the bindings and is updated
accordingly. To ensure the correctness and efficiency of the cache, more
testing has to be conducted.

@@ -405,0 +435,4 @@
+			var it = binding.iterator();
+			while (it.hasNext()) {
+				var handler = it.next();
+				if (handler.getListener() == listener) {

@@ -67,0 +71,4 @@
+	@Test
+	void testBindingCache() {
+		String executionOrder = bus.debugExecutionOrder(SimpleEventSub.class);
+		System.out.println(executionOrder);