active() {
        return new ArgHandler('Sheet.active')
            .case(() => {
                return this.workbook().activeSheet() === this;
            })
            .case('boolean', active => {
                if (!active) throw new Error("Deactivating sheet directly not supported. Activate a different sheet instead.");
                this.workbook().activeSheet(this);
                return this;
            })
            .handle(arguments);
    }
Make the sheet the active sheet in the workkbok.
@param {boolean} active - Must be set to `true`. Deactivating directly is not supported. To deactivate, you should activate a different sheet instead.
@returns {Sheet} The sheet.