class_docstr: LocalWBExplainer is the base class for local post-hoc white box explainers (LBBE).
  Such explainers generally require access to model's internals beyond its predict function.
  Examples include Contrastive explanation method[#1]_, Layer-wise Relevance Propagation[#2]_, etc.
  
  References:
      .. [#] Explanations based on the Missing: Towards Contrastive Explanations with Pertinent Negatives,
         NIPS, 2018. Amit Dhurandhar, Pin-Yu Chen, Ronny Luss, Chun-Chen Tu,
         Paishun Ting, Karthikeyan Shanmugam, Payel Das. https://arxiv.org/abs/1802.07623
      .. [#2] http://www.heatmapping.org/
docstr: Explain an input instance x.
docstr_tok: ["Explain","an","input","instance","x","."]
code: def explain_instance(self, *argv, **kwargs):
      """
      Explain an input instance x.
      """
      raise NotImplementedError
  
imports: import abc
  import sys
label_desc: Use image node_id 3 for calling the LocalWBExplainer obj's underlying member method code with example usage: obj.explain_instance() without return types