src/vs/workbench/contrib/welcomeGettingStarted/browser/gettingStarted.ts/GettingStartedPage/toggleStepCompletion
class GettingStartedPage:	private toggleStepCompletion(argument: string) {
		const stepToggle = assertIsDefined(this.currentWalkthrough?.steps.find(step => step.id === argument));
		if (stepToggle.done) {
			this.gettingStartedService.deprogressStep(argument);
		} else {
			this.gettingStartedService.progressStep(argument);
		}
	}