code: def build_data(self):
      ignore_index = self.config.get("ignoreIndex")
      kwargs = {}
      if ignore_index:
          kwargs["ignore_index"] = ignore_index
      return pd.concat(
          [build_df(dataset) for dataset in self.datasets], **kwargs
      )
  
file_path: dtale/dtale/combine_data.py
imports: import json
  import pandas
  import dtale.global_state
label_desc: Use image node_id 2 for calling the StackBuilder obj's underlying member method code with example usage: obj.build_data() and returns: pd