docs: function(key, southwest, northeast) {
        if (!(southwest instanceof Parse.GeoPoint)) {
          southwest = new Parse.GeoPoint(southwest);
        }
        if (!(northeast instanceof Parse.GeoPoint)) {
          northeast = new Parse.GeoPoint(northeast);
        }
        this._addCondition(key, '$within', { '$box': [southwest, northeast] });
        return this;
      }