@hep.over('<STR_LIT>', '<STR_LIT>')<EOL>@utils.for_each_value<EOL>def imprints(self, key, value):
return {<EOL>'<STR_LIT>': value.get('<STR_LIT:a>'),<EOL>'<STR_LIT>': value.get('<STR_LIT:b>'),<EOL>'<STR_LIT:date>': normalize_date_aggressively(value.get('<STR_LIT:c>')),<EOL>}<EOL>
Populate the ``imprints`` key.