old_contents: from .logger import logger
  from .version import __version__
  
  from . import processor_units
  from .processor_units import chain_transform
  from .data_pack import DataPack, upsample, pack, build_vocab
  from .data_generator import DataGenerator
  
  from . import tasks
  from . import metrics
  from . import losses
  from . import engine
  from . import models
  from . import preprocessors
  
new_contents: from .logger import logger
  from .version import __version__
  
  from . import processor_units
  from .processor_units import chain_transform
  from .data_pack import DataPack, reorganize_data_pack_pair_wise, pack, build_vocab
  from .data_generator import DataGenerator
  
  from . import tasks
  from . import metrics
  from . import losses
  from . import engine
  from . import models
  from . import preprocessors
  
subject: Fix rename