shouldRenderRowGroupFooter(value: any, rowData: any, i: number) {
        let currentRowFieldData = ObjectUtils.resolveFieldData(rowData, this.dt.groupRowsBy);
//        let nextRowData = value[i + (1 + this.dt._first)];
        let nextRowData = value[i + (1 - this.dt._first)];
        if (nextRowData) {
            let nextRowFieldData = ObjectUtils.resolveFieldData(nextRowData, this.dt.groupRowsBy);
            return currentRowFieldData !== nextRowFieldData;
        } else {
            return true;
        }
    }