get Recovery Info
Gets information about the latest flight plan started by the drone prior to current connection.
This information is provided by the drone at connection. It returns null
when the drone is disconnected or when clearRecoveryInfo is called.
If the application lose connection to the drone during a flight plan and then flight plan stops, this information will help the application to manage flight plan resume at reconnection.
Return
information about the latest flight plan started by the drone prior to current connection, or null
if unavailable