Add check for whether _extra_args_2 is defined
Add check for whether _extra_args_2 is defined

patmarion/director,RobotLocomotion/director,RobotLocomotion/director,RobotLocomotion/director,manuelli/director,mitdrc/director,openhumanoids/director,patmarion/director,manuelli/director,mitdrc/director,patmarion/director,openhumanoids/director,openhumanoids/director,RobotLocomotion/director,openhumanoids/director,RobotLocomotion/director,mitdrc/director,manuelli/director,manuelli/director,mitdrc/director,openhumanoids/director,manuelli/director,mitdrc/director,patmarion/director,patmarion/director