Android SDK Version
ClassDescription
Messenger 
MessengerThreadParams
Parameters describing the Intent that Messenger sent to the app.
MessengerUtils
Utilities for Messenger Content Platform.
ShareToMessengerParams
Parameters used by MessengerUtils for sending the media to Messenger to share.
ShareToMessengerParamsBuilder
EnumDescription
MessengerThreadParams.Origin
The origin of the flow that user originated from.