Rotate all Armorstands around a point

Hello i works for 4 days on a option to rotate armorstands around a point i have this ArmorStand model:



The fence in the middle is the midpoint of the ArmorStandmodel i want do rotate it every degress of a circle this is my current code:

Code:

@EventHandler
    public void onMoving(FurnitureMoveEvent e){
        Location loc = FurnitureLib.getInstance().getLocationUtil().getCenter(e.getID().getStartLocation()).subtract(0, .5, 0);     
        for(fEntity entity : e.getID().getPacketList()){
            Relative relative = new Relative(loc, entity.getLocation());
            Vector vector = new Vector(relative.getOffsetX(), 0, relative.getOffsetZ());
            Vector rotate = MathUtil.rotate(2f, 0, vector.normalize());
            rotate = rotate.normalize();
            entity.move(rotate.getX(), rotate.getY(), rotate.getZ());
        }
    }