class_docstr: GlobalBBExplainer is the base class for Global black-box explainers (GBBE).
  Given a source black box model, such explainers generally train a surrogate 
  model that is explainable.
docstr: Train a surrogate model.
docstr_tok: ["Train","a","surrogate","model","."]
code: def fit(self, *argv, **kwargs):
      """
      Train a surrogate model.
      """
      raise NotImplementedError
  
imports: import abc
  import sys
label_desc: Use image node_id 4 for calling the GlobalBBExplainer obj's underlying member method code with example usage: obj.fit() without return types