code: def test_basic(self):
      def f(l):
          """Docstring."""
          a = 1
          l += a
          return l
  
      tr = self.transform(f, functions)
  
      result_op = tr(constant_op.constant(1))
      self.assertIn("f/", result_op.op.name)
      self.assertEqual("Docstring.", tr.__doc__)
  
file_path: tensorflow-upstream/tensorflow/python/autograph/converters/functions_test.py
imports: from tensorflow.python.autograph.converters import functions
  from tensorflow.python.autograph.converters import return_statements
  from tensorflow.python.autograph.core import ag_ctx
  from tensorflow.python.autograph.core import converter
  from tensorflow.python.autograph.core import converter_testing
  from tensorflow.python.autograph.impl import api
  from tensorflow.python.framework import constant_op
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the FunctionTransformer obj's underlying member method code with example usage: obj.test_basic() and returns: l