get
Gets a drone by uid.
Return
the drone with the requested uid, or null if there is no drone with such uid
Parameters
uid
uid of the requested drone
Gets a drone by uid.
Return
the drone with the requested uid, or null if there is no drone with such uid
Parameters
uid
uid of the requested drone
listener
called back when the requested drone disappears. Never called if the requested drone does not exist (i.e. when this method returns null).