code: def extract_data(self):
      return self._data.extract_data(self._indexer)
  
file_path: FATE/python/fate/arch/histogram/_histogram_local.py
imports: import logging
  import typing
  from ._histogram_splits import HistogramSplits
  from .indexer import HistogramIndexer, Shuffler
  from .values import HistogramValuesContainer
label_desc: Use image node_id 12 for calling the Histogram obj's underlying member method code with example usage: obj.extract_data() and returns: self