parseCellAddress(cellAddress) {
        const res = cellAddress.match(/([$]?)([A-Za-z]{1,3})([$]?)([1-9][0-9]*)/);
        // console.log('parseCellAddress', cellAddress);
        return {
            ref: {
                address: res[0],
                col: this.columnNameToNumber(res[2]),
                row: +res[4]
            },
        };
    }
Parse the cell address only.
@param {string} cellAddress
@return {{ref: {col: number, address: string, row: number}}}