code: def ast_to_source(ast):
      """Convert AST to source code string using the astor package"""
      import astor
  
      return astor.to_source(ast)
  
imports: import re
  import copy
  import inspect
  import ast
  import textwrap
label_desc: Use image node_id 2 for calling a global function with example usage: ast_to_source(ast) and returns: astor