def update_date(self):
for field in record_get_field_instances(self.record, '<STR_LIT>'):<EOL><INDENT>for idx, (key, value) in enumerate(field[<NUM_LIT:0>]):<EOL><INDENT>if key == "<STR_LIT:c>":<EOL><INDENT>field[<NUM_LIT:0>][idx] = ("<STR_LIT:c>", convert_date_to_iso(value))<EOL>record_delete_fields(self.record, "<STR_LIT>")<EOL><DEDENT><DEDENT><DEDENT>if '<STR_LIT>' not in self.collections:<EOL><INDENT>for field in record_get_field_instances(self.record, '<STR_LIT>'):<EOL><INDENT>record_add_field(self.record, '<STR_LIT>', subfields=field[<NUM_LIT:0>])<EOL><DEDENT>record_delete_fields(self.record, '<STR_LIT>')<EOL><DEDENT>
269 Date normalization.