FBSDKMessengerBroadcastContext
这个类有新版本。查看 最新版本。

This object is used as an override in FBSDKMessengerShareOptions to ensure the broadcast flow in Messenger is triggered, even if your app was entered from a flow that normally triggers the Messenger reply flow

Inherits from:FBSDKMessengerContext
Declared in:FBSDKMessengerBroadcastContext.h