src/vs/workbench/contrib/codeEditor/browser/suggestEnabledInput/suggestEnabledInput.ts/SuggestEnabledInputWithHistory/getCurrentValue
class SuggestEnabledInputWithHistory:	private getCurrentValue(): string | null {
		let currentValue = this.history.current();
		if (!currentValue) {
			currentValue = this.history.last();
			this.history.next();
		}
		return currentValue;
	}