code: def _lookup_generic_scalar(self,
                                 obj,
                                 as_of_date,
                                 country_code,
                                 matches,
                                 missing):
          
          result = self._lookup_generic_scalar_helper(
              obj, as_of_date, country_code,
          )
          if result is not None:
              matches.append(result)
          else:
              missing.append(obj)
docs: Convert asset_convertible to an asset.
  
          On success, append to matches.
          On failure, append to missing.