code: def render(self):
      if self.t == None:
          self.t = turtle.Turtle()
          self.wn = turtle.Screen()
          self.wn.setup(
              self.unit * self.max_x + 100, self.unit * self.max_y + 100
          )
          self.wn.setworldcoordinates(
              0, 0, self.unit * self.max_x, self.unit * self.max_y
          )
          self.t.shape("circle")
          self.t.width(2)
          self.t.speed(0)
          self.t.color("gray")
          for _ in range(2):
              self.t.forward(self.max_x * self.unit)
              self.t.left(90)
              self.t.forward(self.max_y * self.unit)
              self.t.left(90)
          for i in range(1, self.max_y):
              self.draw_x_line(
                  y=i * self.unit, x0=0, x1=self.max_x * self.unit
              )
          for i in range(1, self.max_x):
              self.draw_y_line(
                  x=i * self.unit, y0=0, y1=self.max_y * self.unit
              )
  
          for i in range(1, self.max_x - 1):
              self.draw_box(i, 0, "black")
          self.draw_box(self.max_x - 1, 0, "yellow")
          self.t.shape("turtle")
  
      x_pos = self.s % self.max_x
      y_pos = self.max_y - 1 - int(self.s / self.max_x)
      self.move_player(x_pos, y_pos)
  
file_path: PARL/examples/tutorials/lesson1/gridworld.py
imports: import gym
  import turtle
  import numpy
label_desc: Use image node_id 6 for calling the CliffWalkingWapper obj's underlying member method code with example usage: obj.render() without return types