code: def test_start1(self):
      def fn(a, b):
          print(a)
          x = a + b
          x = x + 2.0
          x = x + 2.0
          return x
  
      self._common(fn, 1, 3)
  
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 22 for calling the SubGraphTests obj's underlying member method code with example usage: obj.test_start1() and returns: x