getRow(index) {
                util.checkRowIndex(this, index);
                var row = new Array(this.columns);
                for (var i = 0; i < this.columns; i++) {
                    row[i] = this.get(index, i);
                }
                return row;
            }
Returns a new array from the given row index
@param {number} index - Row index
@return {Array}