Fire extinguisher moonlighting as door stopper?

" " Always make sure that fire doors are either closed or kept open in a way that ensures that the door closes automatically if there is a fire. Fire door retainers are the answers. By mis-using an extinguisher as a fire door holder, you also have removed an important fire fighting piece of equipment from its normal place, which could lead to problems when you try to find the extinguisher in a rush.