@hep2marc.over('<STR_LIT>', '<STR_LIT>')<EOL>def titles2marc(self, key, values):
first, rest = values[<NUM_LIT:0>], values[<NUM_LIT:1>:]<EOL>self.setdefault('<STR_LIT>', []).append({<EOL>'<STR_LIT:a>': first.get('<STR_LIT:title>'),<EOL>'<STR_LIT:b>': first.get('<STR_LIT>'),<EOL>'<STR_LIT>': first.get('<STR_LIT:source>'),<EOL>})<EOL>return [<EOL>{<EOL>'<STR_LIT:a>': value.get('<STR_LIT:title>'),<EOL>'<STR_LIT:b>': value.get('<STR_LIT>'),<EOL>'<STR_LIT>': value.get('<STR_LIT:source>'),<EOL>} for value in rest<EOL>]<EOL>
Populate the ``246`` MARC field.

    Also populates the ``245`` MARC field through side effects.