code: def __init__(self, outcome_name, data_df=None):
      self.outcome_name = outcome_name
      self.data_df = None
      if data_df is not None:
          self.data_df = data_df
  
label_desc: Use image node_id 1 to create a new DummyDataInterface object  with example: obj = DummyDataInterface(outcome_name, data_df)