code: def __init__(self, cfg):
      action, config, datasets = (
          cfg.get(prop) for prop in ["action", "config", "datasets"]
      )
      config = json.loads(config)
      datasets = json.loads(datasets)
      self.builder = (
          MergeBuilder(config, datasets)
          if action == "merge"
          else StackBuilder(config, datasets)
      )
  
file_path: dtale/dtale/combine_data.py
imports: import json
  import pandas
  import dtale.global_state
label_desc: Use image node_id 1 to create a new CombineData object from inherited base classes: object with example: obj = CombineData(cfg)