code: def get_lower_case(text):
      """
      Convert PascalCase name to words concatenated by '_'.
      'PascalCase' -> 'pascal_case'
      """
      name = re.sub("(.)([A-Z][a-z]+)", r"\1_\2", text)
      return re.sub("([a-z0-9])([A-Z])", r"\1_\2", name).lower()
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_lower_case(text) and returns: re