code: def __init__(self):
      super().__init__()
      self.meta["params"]["a"] = 1
  
imports: import copy
  import numpy
  import pytest
  from alibi.api.interfaces import Explainer, Explanation, FitMixin
label_desc: Use image node_id 1 to create a new SimpleExplainerWithInit object from inherited base classes: Explainer with example: obj = SimpleExplainerWithInit()