class_docstr: Simple handler of SEADAS L2 files.
code: def _valid_min_max(self, data_arr):
      try:
          return data_arr.attrs["valid_range"]
      except KeyError:
          return (
              data_arr.attrs["valid_min"],
              data_arr.attrs["valid_max"],
          )
  
imports: from datetime import datetime
  from .hdf4_utils import HDF4FileHandler
  from .netcdf_utils import NetCDF4FileHandler
label_desc: Use image node_id 12 for calling the _SEADASL2Base obj's underlying member method code with example usage: obj._valid_min_max(data_arr) and returns: data_arr, data_arr,  data_arr