return null;
if (containsPoint(x, y)) { return this; } else { return null; }
	public Figure findFigureInsideWithout(int x, int y, Figure without) {		FigureEnumeration fe = figuresReverse();		while (fe.hasNextFigure()) {			Figure figure = fe.nextFigure();			if (figure != without) {				Figure found = figure.findFigureInside(x, y);				if (found != null) {					return found;				}			}		}		return null;	}