class_docstr: This is an abstract class that contains main helper functionality for
  search methods.
  
  A search method is a strategy for applying transformations until the
  goal is met or the search is exhausted.
code: def get_victim_model(self):
      if self.is_black_box:
          raise NotImplementedError(
              "Cannot access victim model if search method is a black-box method."
          )
      else:
          return self.goal_function.model
  
file_path: TextAttack/textattack/search_methods/search_method.py
imports: from abc import ABC, abstractmethod
  from textattack.shared.utils import ReprMixin
label_desc: Use image node_id 5 for calling the SearchMethod obj's underlying member method code with example usage: obj.get_victim_model() and returns: self