class_docstr: Reader class for FCI L2 products in NetCDF4 format.
class_docstr_tok: ["Reader","class","for","FCI","L2","products","in","NetCDF4","format","."]
code: def _decode_clm_test_data(variable, dataset_info):
      if dataset_info["file_key"] != "cloud_mask_cmrt6_test_result":
          variable = variable.astype("uint32")
          variable.values = (
              variable.values
              >> dataset_info["extract_byte"]
              << 31
              >> 31
          ).astype("int8")
  
      return variable
  
imports: import logging
  from contextlib import suppress
  import numpy
  import xarray
  from pyresample import geometry
  from satpy._compat import cached_property
  from satpy.readers._geos_area import get_geos_area_naming, make_ext
  from satpy.readers.eum_base import get_service_mode
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.resample import get_area_def
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 4 for calling the FciL2NCFileHandler obj's underlying member method code with example usage: obj._decode_clm_test_data(variable, dataset_info) and returns: variable