code: def namedtuple_subclass(x):
      nt = NamedTupleSubclass(x)
      return nt.foo()
  
file_path: tensorflow/tensorflow/python/autograph/tests/call_to_named_tuple_test.py
imports: import collections
  import tensorflow.compat.v1
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 3 for calling a global function with example usage: namedtuple_subclass(x) and returns: nt