Method _modifyTimestampBy

packages/main/src/YearRangePicker.ts:489–496

* Modifies timestamp by a given amount of year ranges and, if necessary, loads the prev/next page. * @param amount * @private

(amount: number)

	 * @private
	 */
	_modifyTimestampBy(amount: number) {
		// Modify the current timestamp
		const amountInYears = amount * this._getRangeSize();
		this._safelyModifyTimestampBy(amountInYears, "year");

		// Notify the calendar to update its timestamp
		this.fireDecoratorEvent("navigate", { timestamp: this.timestamp! });
	}

	_modifyGridStartBy(years: number) {
		this._gridStartYear! += years;