code: def test_nested_methodcache(self):
      a, b, c, d = Tensor([1]), Tensor([2]), Tensor([3]), Tensor([4])
      ((a + b) + (a + b)).realize()
      Device[Device.DEFAULT].compiler = None
      ((c + d) + (c + d)).realize()
  
file_path: tinygrad/test/test_method_cache.py
imports: import unittest
  from tinygrad import Tensor, Device, Variable
  from tinygrad.device import Compiled
  from examples.gpt2 import Transformer
  from tinygrad.nn.state import get_state_dict
label_desc: Use image node_id 4 for calling the TestMethodCache obj's underlying member method code with example usage: obj.test_nested_methodcache() without return types