@hep2marc.over('<STR_LIT>', '<STR_LIT>')<EOL>@utils.for_each_value<EOL>def persistent_identifiers2marc(self, key, value):
return {<EOL>'<STR_LIT:2>': value.get('<STR_LIT>'),<EOL>'<STR_LIT>': value.get('<STR_LIT:source>'),<EOL>'<STR_LIT:a>': value.get('<STR_LIT:value>'),<EOL>'<STR_LIT:q>': value.get('<STR_LIT>'),<EOL>}<EOL>
Populate the ``0247`` MARC field.