@hep.over('<STR_LIT>', '<STR_LIT>')<EOL>@utils.for_each_value<EOL>def _desy_bookkeeping(self, key, value):
return {<EOL>'<STR_LIT:date>': normalize_date(value.get('<STR_LIT:d>')),<EOL>'<STR_LIT>': force_single_element(value.get('<STR_LIT:a>')),<EOL>'<STR_LIT:status>': value.get('<STR_LIT:s>'),<EOL>}<EOL>
Populate the ``_desy_bookkeeping`` key.