code: def load_asdf(self, asdf_obj, **kwargs):
          
          self.clear_metadata()
  
          data, wcs, ahdr = io_asdf.load_asdf(asdf_obj, **kwargs)
  
          self.setup_data(data, naxispath=None)
  
          wcsinfo = wcsmod.get_wcs_class('astropy_ape14')
          self.wcs = wcsinfo.wrapper_class(logger=self.logger)
          self.wcs.wcs = wcs
  
          if wcs is not None:
              self.wcs.coordsys = wcs.output_frame.name
docs: Load from an ASDF object.
          See :func:`ginga.util.io_asdf.load_asdf` for more info.