code: def construct(self):
      mem = Rectangle(height=0.5, width=0.5)
      fill = Rectangle(height=0.46, width=0.46).set_stroke(width=0)
  
      cpu_left_col_base = [mem.copy() for i in range(6)]
      cpu_right_col_base = [mem.copy() for i in range(6)]
      cpu_left_col = VGroup(*cpu_left_col_base).arrange(UP, buff=0)
      cpu_right_col = VGroup(*cpu_right_col_base).arrange(UP, buff=0)
      cpu_rects = VGroup(cpu_left_col, cpu_right_col).arrange(
          RIGHT, buff=0
      )
      cpu_text = Text("CPU", font_size=24)
      cpu = Group(cpu_rects, cpu_text).arrange(
          DOWN, buff=0.5, aligned_edge=DOWN
      )
      cpu.move_to([-2.5, -0.5, 0])
      self.add(cpu)
  
      gpu_base = [mem.copy() for i in range(1)]
      gpu_rect = VGroup(*gpu_base).arrange(UP, buff=0)
      gpu_text = Text("GPU", font_size=24)
      gpu = Group(gpu_rect, gpu_text).arrange(
          DOWN, buff=0.5, aligned_edge=DOWN
      )
      gpu.align_to(cpu, DOWN)
      gpu.set_x(gpu.get_x() - 1)
  
      self.add(gpu)
  
      model_base = [mem.copy() for i in range(6)]
      model_rect = VGroup(*model_base).arrange(RIGHT, buff=0)
  
      model_text = Text("Model", font_size=24)
      model = Group(model_rect, model_text).arrange(
          DOWN, buff=0.5, aligned_edge=DOWN
      )
      model.move_to([3, -1.0, 0])
  
      self.play(
          Create(cpu_left_col, run_time=1),
          Create(cpu_right_col, run_time=1),
          Create(gpu_rect, run_time=1),
      )
  
      step_1 = MarkupText(
          f"First, an empty model skeleton is loaded\ninto <span fgcolor='{YELLOW}'>memory</span> without using much RAM.",
          font_size=24,
      )
  
      key = Square(side_length=2.2)
      key.move_to([-5, 2, 0])
  
      key_text = MarkupText(
          f"<b>Key:</b>\n\n<span fgcolor='{YELLOW}'>●</span> Empty Model",
          font_size=18,
      )
  
      key_text.move_to([-5, 2.4, 0])
  
      step_1.move_to([2, 2, 0])
      self.play(
          Write(step_1, run_time=2.5), Write(key_text), Write(key)
      )
  
      self.add(model)
  
      cpu_targs = []
      first_animations = []
      second_animations = []
      for i, rect in enumerate(model_base):
          cpu_target = (
              Rectangle(height=0.46, width=0.46)
              .set_stroke(width=0.0)
              .set_fill(YELLOW, opacity=0.7)
          )
          cpu_target.move_to(rect)
          cpu_target.generate_target()
          cpu_target.target.height = 0.46 / 4
          cpu_target.target.width = 0.46 / 3
  
          if i == 0:
              cpu_target.target.next_to(
                  cpu_left_col_base[0].get_corner(DOWN + LEFT),
                  buff=0.02,
                  direction=UP,
              )
              cpu_target.target.set_x(cpu_target.target.get_x() + 0.1)
          elif i == 3:
              cpu_target.target.next_to(
                  cpu_targs[0].target, direction=UP, buff=0.0
              )
          else:
              cpu_target.target.next_to(
                  cpu_targs[i - 1].target, direction=RIGHT, buff=0.0
              )
          cpu_targs.append(cpu_target)
  
          first_animations.append(
              rect.animate(run_time=0.5).set_stroke(YELLOW)
          )
          second_animations.append(
              MoveToTarget(cpu_target, run_time=1.5)
          )
  
      self.play(*first_animations)
      self.play(*second_animations)
  
      self.wait()
  
imports: from manim import *
label_desc: Use image node_id 1 for calling the Stage1 obj's underlying member method code with example usage: obj.construct() without return types