code: def load_file_to_dataframe(self, file_path: str) -> pd.DataFrame:
      if file_path.endswith(".test"):
          # The test file contains the line "|1x3 Cross validator" before the CSV content.
          return pd.read_csv(file_path, skiprows=1)
      return super().load_file_to_dataframe(file_path)
  
imports: import pandas
  from ludwig.datasets.loaders.dataset_loader import DatasetLoader
label_desc: Use image node_id 1 for calling the AdultCensusIncomeLoader obj's underlying member method code with example usage: obj.load_file_to_dataframe(file_path) and returns: super, pd