class_docstr: Swap-in HDF5 File Handler.
code: def _set_sensor_attrs(self, global_attrs):
      if "mersi2_l1b" in self.filetype_info["file_type"]:
          global_attrs["/attr/Satellite Name"] = "FY-3D"
          global_attrs["/attr/Sensor Identification Code"] = "MERSI"
      elif "mersi_ll" in self.filetype_info["file_type"]:
          global_attrs["/attr/Satellite Name"] = "FY-3E"
          global_attrs["/attr/Sensor Identification Code"] = "MERSI LL"
      return global_attrs
  
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 3 for calling the FakeHDF5FileHandler2 obj's underlying member method code with example usage: obj._set_sensor_attrs(global_attrs) and returns: global_attrs