code: def _get_column_max_bin(self, result_dict):
      bin_len = {}
      for column, values in result_dict.items():
          bin_num = len(values)
          bin_len[column] = bin_num
      max_max_value = max(bin_len.values())
      return bin_len, max_max_value
  
imports: import numpy
  import pandas
  from fate.arch import Context
  from fate.arch.dataframe import DataFrame
  from fate.ml.ensemble.learner.decision_tree.tree_core.splitter import SplitInfo
  from typing import List
  import logging
label_desc: Use image node_id 13 for calling the DecisionTree obj's underlying member method code with example usage: obj._get_column_max_bin(result_dict) and returns: bin_len,  max_max_value