code: def test_restore_state(self):
      def fn(a, b):
          len_ = len
          x = a + b
          x = torch.add(unsupported(x, x), 1)
          return a * x + len_(b)
  
      self._common(fn, 2, ifdynstaticdefault(4, 5))
  
imports: from unittest.mock import patch
  import torch
  import torch._dynamo.test_case
  import torch._dynamo.testing
  from torch._dynamo.testing import unsupported
  from torch._dynamo.utils import ifdynstaticdefault
label_desc: Use image node_id 27 for calling the SubGraphTests obj's underlying member method code with example usage: obj.test_restore_state() and returns: unknown