code: def invert(data, _):
      return types.Constant(255, dtype=types.UINT8) - data
  
imports: from nvidia.dali import fn
  from nvidia.dali import types
  from nvidia.dali.auto_aug.core import augmentation
label_desc: Use image node_id 22 for calling a global function with example usage: invert(data, _) and returns: unknown