class_docstr: ATMS SDR HDF5 File Reader.
class_docstr_tok: ["ATMS","SDR","HDF5","File","Reader","."]
docstr: Get the channels array index from name.
docstr_tok: ["Get","the","channels","array","index","from","name","."]
code: def _get_atms_channel_index(self, ch_name):
      """Get the channels array index from name."""
      try:
          return ATMS_CHANNEL_NAMES.index(ch_name)
      except ValueError:
          return None
  
file_path: satpy/satpy/readers/atms_sdr_hdf5.py
imports: import logging
  import os
  import dask.array
  import h5py
  import xarray
  from satpy.readers.viirs_atms_sdr_base import DATASET_KEYS, JPSS_SDR_FileHandler
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 3 for calling the ATMS_SDR_FileHandler obj's underlying member method code with example usage: obj._get_atms_channel_index(ch_name) and returns: ATMS_CHANNEL_NAMES, None