Fix issue #318: Change Manager superclass
Fix issue #318: Change Manager superclass

opps/opps,jeanmask/opps,jeanmask/opps,jeanmask/opps,YACOWS/opps,williamroot/opps,opps/opps,opps/opps,opps/opps,jeanmask/opps,YACOWS/opps,YACOWS/opps,williamroot/opps,williamroot/opps,YACOWS/opps,williamroot/opps