code: def merge_map_list(map_list):
      """Merge all the Map in map_list into one final Map.
  
      Useful when you have a list of benchmark result maps and you want to
      prepare one final map combining all results.
  
      Parameters
      ----------
      map_list: List[maps]
          List of maps to be merged.
  
      Returns
      -------
      map where all individual maps in the into map_list are merged
  
      """
      # Preserve order of underlying maps and keys when converting to a single map
      final_map = dict()
  
      for current_map in map_list:
          for key in current_map:
              final_map[key] = current_map[key]
  
      return final_map
  
file_path: mxnet/benchmark/opperf/utils/common_utils.py
imports: import os
  import json
  from operator import itemgetter
  import logging
label_desc: Use image node_id 1 for calling a global function with example usage: merge_map_list(map_list) and returns: final_map