code: def build_code(self):
      code = build_code_data(self.datasets, is_merge=True)
      ignore_index = self.config.get("ignoreIndex")
      ignore_index_param = ", ignore_index=True" if ignore_index else ""
      code.append(
          "df = pd.concat([{dfs}]{ignore_index})".format(
              dfs=",".join(
                  [
                      "df{}".format(idx)
                      for idx, _ in enumerate(self.datasets, 1)
                  ]
              ),
              ignore_index=ignore_index_param,
          )
      )
      return code
  
file_path: dtale/dtale/combine_data.py
imports: import json
  import pandas
  import dtale.global_state
label_desc: Use image node_id 3 for calling the StackBuilder obj's underlying member method code with example usage: obj.build_code() and returns: code