code: def merge_flat_args(args, defaults):
      idx = 0
      new_args = []
      for val in defaults:
          if val is None:
              new_args.append(args[idx])
              idx += 1
          else:
              new_args.append(val)
      return new_args
  
label_desc: Use image node_id 1 for calling a global function with example usage: merge_flat_args(args, defaults) and returns: new_args