class_docstr: A Sensitivity Check class to support Placebo Treatment, Irrelevant Additional Confounder
  and Subset validation refutation methods to verify causal inference.
  
  Reference: https://github.com/microsoft/dowhy/blob/master/dowhy/causal_refuters/
code: def sensitivity_estimate(self):
      raise NotImplementedError
  
imports: import logging
  import numpy
  import pandas
  from collections import defaultdict
  import matplotlib.pyplot
  from importlib import import_module
label_desc: Use image node_id 7 for calling the Sensitivity obj's underlying member method code with example usage: obj.sensitivity_estimate() without return types