Global position setpoint triplet in WGS84 coordinates. This are the three next waypoints (or just the next two or one).
# Global position setpoint triplet in WGS84 coordinates.
# This are the three next waypoints (or just the next two or one).
uint64 timestamp # time since system start (microseconds)
PositionSetpoint previous
PositionSetpoint current
PositionSetpoint next