src/vs/base/browser/ui/inputbox/inputBox.ts/HistoryInputBox/showNextValue
class HistoryInputBox:	public showNextValue(): void {
		if (!this.history.has(this.value)) {
			this.addToHistory();
		}

		let next = this.getNextValue();
		if (next) {
			next = next === this.value ? this.getNextValue() : next;
		}

		if (next) {
			this.value = next;
			aria.status(this.value);
		}
	}