code: def _get_aux_data_name_from_dsname(dsname):
      aux_data_name = [key for key in AUX_DATA.keys() if key in dsname]
      if len(aux_data_name) > 0:
          return aux_data_name[0]
  
      return None
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import logging
  from datetime import timedelta
  from functools import cached_property
  import dask.array
  import numpy
  import xarray
  from netCDF4 import default_fillvals
  from pyresample import geometry
  from satpy.readers._geos_area import get_geos_area_naming
  from satpy.readers.eum_base import get_service_mode
  from .netcdf_utils import NetCDF4FsspecFileHandler
label_desc: Use image node_id 1 for calling a global function with example usage: _get_aux_data_name_from_dsname(dsname) and returns: None, aux_data_name