code: def __init__(
      self,
      instruments="csi300",
      start_time=None,
      end_time=None,
      day_length=240,
      freq="1min",
      columns=["$close", "$vwap", "$volume"],
      inst_processors=None,
  ):
      self.day_length = day_length
      self.columns = set(columns)
      data_loader = {
          "class": "QlibDataLoader",
          "kwargs": {
              "config": self.get_feature_config(),
              "swap_level": False,
              "freq": freq,
              "inst_processors": inst_processors,
          },
      }
      super().__init__(
          instruments=instruments,
          start_time=start_time,
          end_time=end_time,
          data_loader=data_loader,
      )
  
imports: from qlib.data.dataset.handler import DataHandler, DataHandlerLP
  from .handler import check_transform_proc
label_desc: Use image node_id 1 to create a new HighFreqGeneralBacktestHandler object from inherited base classes: DataHandler with example: obj = HighFreqGeneralBacktestHandler(instruments, start_time, end_time, day_length, freq, columns, inst_processors)