SAP UI5
EventBus是一个小型的subscribe/publish模式实现，位于namespace sap.ui.core下面。
subscribe：
publish：
消息订阅：
消息发布：
Kyma
Kyma Event Bus receives Events from external solutions and triggers the business logic created with lambda functions and services in Kyma. The Event Bus is based on the NATS Streamingopen source messaging system for cloud-native applications.
