code: def _print_signature(fn, name):
      concrete_fn = fn._list_all_concrete_functions()[0]
      pprinted_signature = concrete_fn.pretty_printed_signature(
          verbose=True
      )
      lines = pprinted_signature.split("\n")
      lines = [f"* Endpoint '{name}'"] + lines[1:]
      endpoint = "\n".join(lines)
      return endpoint
  
imports: from absl import logging
  from keras import backend
  from keras.api_export import keras_export
  from keras.layers import Layer
  from keras.models import Functional
  from keras.models import Sequential
  from keras.utils import io_utils
  from keras.utils.module_utils import tensorflow
label_desc: Use image node_id 4 for calling a global function with example usage: _print_signature(fn, name) and returns: endpoint