code: def test_no_outputs(self):
      def f(n):
          if n > 0:
              b = 4  # pylint:disable=unused-variable # noqa: F841
          return n
  
      self.assertTransformedResult(f, custom_constant(1), 1)
      self.assertTransformedResult(f, custom_constant(-1), -1)
  
imports: import collections
  from nvidia.dali._autograph.converters import break_statements
  from nvidia.dali._autograph.converters import continue_statements
  from nvidia.dali._autograph.converters import control_flow
  from nvidia.dali._autograph.core import converter_testing
  from nvidia.dali._autograph.utils.all_utils import custom_constant
label_desc: Use image node_id 9 for calling the IfStatementTest obj's underlying member method code with example usage: obj.test_no_outputs() and returns: n