def get_evaluations(self, variant_obj):
        """Return all evaluations for a certain variant.

        Args:
            variant_obj (dict): variant dict from the database

        Returns:
            pymongo.cursor: database cursor
        """
        query = dict(variant_id=variant_obj['variant_id'])
        res = self.acmg_collection.find(query).sort([('created_at', pymongo.DESCENDING)])
        return res
Return all evaluations for a certain variant.

        Args:
            variant_obj (dict): variant dict from the database

        Returns:
            pymongo.cursor: database cursor