code: def nested_functions(x):
      """Docstring."""
  
      def inner_fn(y):
          return y
  
      return inner_fn(x)
  
file_path: tensorflow/tensorflow/python/autograph/pyct/testing/basic_definitions.py
label_desc: Use image node_id 2 for calling a global function with example usage: nested_functions(x) and returns: inner_fn, y