Added comment for self check in set_output
Added comment for self check in set_output

hjanime/VisTrails,hjanime/VisTrails,Nikea/VisTrails,Nikea/VisTrails,Nikea/VisTrails,celiafish/VisTrails,celiafish/VisTrails,minesense/VisTrails,minesense/VisTrails,hjanime/VisTrails,celiafish/VisTrails,hjanime/VisTrails,minesense/VisTrails,hjanime/VisTrails,celiafish/VisTrails,minesense/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,VisTrails/VisTrails,VisTrails/VisTrails,minesense/VisTrails,VisTrails/VisTrails,VisTrails/VisTrails