code: def slice_of_application(n, x):
      return n(x)[:, tf.newaxis] - n(x)[tf.newaxis, :]
  
file_path: tensorflow-upstream/tensorflow/python/autograph/tests/ext_slice_test.py
imports: import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 3 for calling a global function with example usage: slice_of_application(n, x) and returns: unknown