class_docstr: ATMS SDR HDF5 File Reader.
class_docstr_tok: ["ATMS","SDR","HDF5","File","Reader","."]
docstr: Get item for given key.
docstr_tok: ["Get","item","for","given","key","."]
code: def __getitem__(self, key):
      """Get item for given key."""
      val = self.file_content[key]
      if isinstance(val, h5py.Dataset):
          dset = h5py.File(self.filename, "r")[key]
          if dset.ndim == 3:
              dset_data = da.from_array(dset, chunks=CHUNK_SIZE)
              attrs = self._attrs_cache.get(key, dset.attrs)
              return xr.DataArray(
                  dset_data, dims=["y", "x", "z"], attrs=attrs
              )
  
      return super().__getitem__(key)
  
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 2 for calling the ATMS_SDR_FileHandler obj's underlying member method code with example usage: obj.__getitem__(key) and returns: super, xr