code: def test_parse_lambda_resolution_by_signature(self):
      l = lambda x: lambda x, y: x + y
  
      node, source = parser.parse_entity(l, future_features=())
      expected_node_src = "lambda x: (lambda x, y: (x + y))"
      self.assertAstMatches(node, source)
      self.assertAstMatches(node, expected_node_src)
      self.assertEqual(source, "lambda x: lambda x, y: x + y")
  
      node, source = parser.parse_entity(l(0), future_features=())
      expected_node_src = "lambda x, y: (x + y)"
      self.assertAstMatches(node, source)
      self.assertAstMatches(node, expected_node_src)
      self.assertEqual(source, "lambda x, y: x + y")
  
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 6 for calling the ParserTest obj's underlying member method code with example usage: obj.test_parse_lambda_resolution_by_signature() without return types