class_docstr: Swap-in HDF5 File Handler.
code: def _get_data_file_content(self):
      if "_geo" in self.filetype_info["file_type"]:
          return self._add_geo_data_file_content()
      return self._add_band_data_file_content()
  
imports: import os
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from satpy.tests.reader_tests.test_hdf5_utils import FakeHDF5FileHandler
label_desc: Use image node_id 4 for calling the FakeHDF5FileHandler2 obj's underlying member method code with example usage: obj._get_data_file_content() and returns: self, self