@update_query
    def hremove(self, query, attr, keys):
        value = QueryWrapper('delete("%s", %%s)' % attr, [keys])
        field, model, direct, m2m = self.model._meta.get_field_by_name(attr)
        query.add_update_fields([(field, None, value)])
        return query
Create the documentHeader Element.
dataset/ETHPy150Open djangonauts/djorm-ext-hstore/djorm_hstore/models.py/HStoreQuerysetMixin.hremove--crossover with--dataset/ETHPy150Open cidles/graf-python/src/graf/io.py/StandoffHeaderRenderer.render_documentheader