code: def test_parse_lambda(self):
      l = lambda x: x + 1
      expected_node_src = "lambda x: (x + 1)"
  
      node, source = parser.parse_entity(l, future_features=())
      self.assertAstMatches(node, source)
      self.assertAstMatches(node, expected_node_src)
  
imports: import re
  import textwrap
  import gast
  from tensorflow.python.autograph.pyct import ast_util
  from tensorflow.python.autograph.pyct import errors
  from tensorflow.python.autograph.pyct import parser
  from tensorflow.python.autograph.pyct import pretty_printer
  from tensorflow.python.platform import test
label_desc: Use image node_id 3 for calling the ParserTest obj's underlying member method code with example usage: obj.test_parse_lambda() without return types