code: def test_start2(self):
      def fn(a, b):
          x = indirectly_unsupported(a, b)
          x = x + 2.0
          x = x + 2.0
          x = x + 2.0
          return x
  
      self._common(fn, 2, 4)
  
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 23 for calling the SubGraphTests obj's underlying member method code with example usage: obj.test_start2() and returns: x