code: def __call__(
      self, anchor: tuple, num_samples: int
  ) -> Tuple[np.ndarray, np.ndarray]:
      pass
  
imports: import logging
  from abc import abstractmethod
  from typing import TYPE_CHECKING, Dict, List, Optional, Tuple, Union
  import numpy
  import spacy
label_desc: Use image node_id 2 for calling the AnchorTextSampler obj's underlying member method code with example usage: obj.__call__(anchor, num_samples) without return types