Create working pub-sub integration test
Also, refactors locations of some classes
diff --git a/src/main/java/com/intel/jndn/utils/On.java b/src/main/java/com/intel/jndn/utils/On.java
new file mode 100644
index 0000000..96a84d2
--- /dev/null
+++ b/src/main/java/com/intel/jndn/utils/On.java
@@ -0,0 +1,28 @@
+/*
+ * jndn-utils
+ * Copyright (c) 2016, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 3, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
+ * more details.
+ */
+
+package com.intel.jndn.utils;
+
+/**
+ * Generic callback API for receiving some signal T when an event is fired.
+ *
+ * @author Andrew Brown, andrew.brown@intel.com
+ */
+@FunctionalInterface
+public interface On<T> {
+ /**
+ * @param event the event object describing the occurrence
+ */
+ void on(T event);
+}