code: def _get_fid_name_mapping(self, data_instances: DataFrame):
      columns = data_instances.schema.columns
      for idx, col in enumerate(columns):
          self._fid_name_mapping[idx] = col
  
file_path: FATE/python/fate/ml/ensemble/algo/secureboost/hetero/_base.py
imports: from typing import List
  import functools
  from fate.arch.dataframe import DataFrame
  from fate.ml.abc.module import HeteroModule, Model
  from fate.ml.ensemble.learner.decision_tree.tree_core.decision_tree import FeatureImportance, Node
  from typing import Dict
  import numpy
label_desc: Use image node_id 4 for calling the HeteroBoostingTree obj's underlying member method code with example usage: obj._get_fid_name_mapping(data_instances) without return types