add method point

src/main/java/shape/Decorator.java

 package shape;
 
+import javafx.geometry.Point2D;
+
 public abstract class Decorator implements Shape {
     protected Shape decoratedShape;
 
@@ -10,4 +12,9 @@ public abstract class Decorator implements Shape {
     public int pointsCount(){
         return decoratedShape.pointsCount();
     }
+
+    @Override
+    public Point2D point(int index) {
+        return decoratedShape.point(index);
+    }
 }