code: def from_vega(cls, **kwargs):
          
          filename = conf.vega_file
          header, wavelengths, fluxes = specio.read_remote_spec(
              filename, **kwargs)
          header['filename'] = filename
          meta = {'header': header,
                  'expr': 'Vega from {0}'.format(os.path.basename(filename))}
          return cls(Empirical1D, points=wavelengths, lookup_table=fluxes,
                     meta=meta)
docs: Load :ref:`Vega spectrum <synphot-vega-spec>`.
  
          Parameters
          ----------
          kwargs : dict
              Keywords acceptable by :func:`~synphot.specio.read_remote_spec`.
  
          Returns
          -------
          vegaspec : `SourceSpectrum`
              Empirical Vega spectrum.