code: def get_prime(func):
      if func == identity:
          return identity_prime
  
imports: import itertools
  import numpy
  import pytest
  from neon import NervanaObject
  from neon.layers.layer import Convolution
  from neon.initializers.initializer import Uniform
  from utils import allclose_with_out
label_desc: Use image node_id 7 for calling a global function with example usage: get_prime(func) and returns: identity_prime