code: def generate_random_functiondef():
      return CodeGenerator().generate_FunctionDef()
  
imports: import random
  import string
  import gast
  import numpy
  from nvidia.dali._autograph.pyct import gast_util
  from nvidia.dali._autograph.pyct import templates
label_desc: Use image node_id 1 for calling a global function with example usage: generate_random_functiondef() and returns: CodeGenerator