
What function needs to be added in order to make the animation moves?
while True:
    turtle.addshape('frame0.gif')
    turtle.shape('frame0.gif')
    turtle._____(5)
    time.sleep(0.1)
    turtle.addshape('frame1.gif')
    turtle.shape('frame1.gif')
    turtle._____(5)
    time.sleep(0.1)
    turtle.addshape('frame2.gif')
    turtle.shape('frame2.gif')
    turtle._____(5)
    time.sleep(0.1)