MediateV.S EventHandler

最近看了一些wiz框架的例子，發現Mediate這個標籤用的比較多，只知道它的做用跟EventHandler是同樣的，可是二者有什麼區別，實在是沒搞明白。原覺得這個標籤功能更強悍，上網google了一把，才知道在SWIZ1.0以後更偏向用EventHandler，由於Mediate會讓人感到有些疑惑，並且不能很好的描述這個標籤的意圖，用EventHandler就明朗多了.如下是原話：

Mediate will continue to work since it has been around for so long, but it
is being deprecated in favor of the [EventHandler] metadata tag. We decided
that Mediate was just confusing and didn't describe the intent of the tag
very well. EventHandler makes it more obvious what the tag is doing.