code: def __init__(self):
      self.vectorizer: Union[Vectorizer, None] = None
      self.preprocessor: Union[Preprocessor, None] = None
      self.embedding_size: Union[int, None] = None
  
file_path: headliner/headliner/model/summarizer.py
imports: import abc
  from abc import abstractmethod
  from typing import Callable, Dict, Union
  import numpy
  import tensorflow
  from headliner.preprocessing import Preprocessor, Vectorizer
label_desc: Use image node_id 1 to create a new Summarizer object from inherited base classes: abc with example: obj = Summarizer()