code: def __getstate__(self):
      state = {}
      for k, v in self.__dict__.items():
          if (v is not self.index) and (v is not self.faiss):
              state[k] = v
          else:
              state[k] = self.faiss.serialize_index(self.index)
      return state
  
imports: import logging
  import numpy
  from pandas import DataFrame
  from scipy.stats import mode
  from sklearn.utils.extmath import weighted_mode
  from autogluon.common.utils.try_import import try_import_faiss
label_desc: Use image node_id 4 for calling the FAISSNeighborsRegressor obj's underlying member method code with example usage: obj.__getstate__() and returns: state