class java.util.EventObject (implements java.io.Serializable)
class org.apache.avalon.excalibur.cache.CacheEvent
class org.apache.avalon.excalibur.cache.SynchronizedCache (implements org.apache.avalon.excalibur.cache.Cache, org.apache.avalon.framework.thread.ThreadSafe)
class org.apache.avalon.excalibur.cache.ValidatingCache (implements org.apache.avalon.excalibur.cache.Cache)