code: def test_save_and_load_empty(self):
      file_path = os.path.join(
          _get_temporary_directory(), "test_with_empty.zip"
      )
      df = pd.DataFrame()
      processor = LargeDataFrameProcessor(max_byte=int(1e6))
      processor.save(df, file_path)
      loaded = processor.load(file_path)
  
      pd.testing.assert_frame_equal(loaded, df, check_like=True)
  
file_path: gokart/test/test_large_data_fram_processor.py
imports: import os
  import shutil
  import unittest
  import numpy
  import pandas
  from gokart.target import LargeDataFrameProcessor
label_desc: Use image node_id 3 for calling the LargeDataFrameProcessorTest obj's underlying member method code with example usage: obj.test_save_and_load_empty() without return types