package com.ctrip.framework.apollo.portal.listener; import com.google.common.base.Preconditions; import com.ctrip.framework.apollo.common.entity.App; import org.springframework.context.ApplicationEvent; public class AppInfoChangedEvent extends ApplicationEvent{ public AppInfoChangedEvent(Object source) { super(source); } public App getApp() { Preconditions.checkState(source != null); return (App) this.source; } }