code: def test_no_return(self):
      def f(x):
          x *= x
  
      self.assertTransformedEquivalent(f, 2)
  
imports: from nvidia.dali._autograph.converters import functions
  from nvidia.dali._autograph.converters import return_statements
  from nvidia.dali._autograph.core import converter_testing
label_desc: Use image node_id 13 for calling the SingleReturnTest obj's underlying member method code with example usage: obj.test_no_return() without return types