class_docstr: File handler for DSCOVR EPIC L1b data.
code: def _update_metadata(self, band):
      band = band.rename({band.dims[0]: "x", band.dims[1]: "y"})
      band.attrs.update(
          {"platform_name": self.platform_name, "sensor": self.sensor}
      )
  
      return band
  
file_path: satpy/satpy/readers/epic_l1b_h5.py
imports: import logging
  from datetime import datetime
  import dask.array
  import numpy
  from satpy.readers.hdf5_utils import HDF5FileHandler
label_desc: Use image node_id 7 for calling the DscovrEpicL1BH5FileHandler obj's underlying member method code with example usage: obj._update_metadata(band) and returns: band