code: def trim_for_test(tf):
      return _mark_class_as(tf, _ATTR_NAME)
  
imports: import copy
  import paddleseg
  from paddleseg.utils import logger
  import paddlepanseg.transforms
label_desc: Use image node_id 3 for calling a global function with example usage: trim_for_test(tf) and returns: _mark_class_as