class_docstr: Swap-in HDF5 File Handler.
code: def _geo_prefix_for_file_type(self):
      return (
          "Geolocation/"
          if "1000" in self.filetype_info["file_type"]
          else ""
      )
  
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 9 for calling the FakeHDF5FileHandler2 obj's underlying member method code with example usage: obj._geo_prefix_for_file_type() and returns: unknown