code: def __init__(self) -> None:
      self._defaults = OrderedDict()
  
file_path: carefree-learn/cflearn/pipeline/blocks/utils.py
imports: import os
  from abc import abstractmethod
  from abc import ABCMeta
  from typing import OrderedDict
  from collections import OrderedDict
  from ..core import Block
  from ...schema import DLConfig
label_desc: Use image node_id 1 to create a new InjectDefaultsMixin object  with example: obj = InjectDefaultsMixin()