code: def get_indent(indent_str):
      """
      Check if the indent exists
      """
      if indent_str is None:
          return ""
      else:
          return indent_str
  
imports: from __future__ import print_function
  import re
label_desc: Use image node_id 2 for calling a global function with example usage: get_indent(indent_str) and returns: str, indent_str