src/vs/workbench/contrib/welcomeGettingStarted/browser/gettingStartedService.ts/WalkthroughsService/registerWalkthrough
class WalkthroughsService:	registerWalkthrough(walkthoughDescriptor: IWalkthroughLoose) {
		this._registerWalkthrough({
			...walkthoughDescriptor,
			steps: walkthoughDescriptor.steps.map(step => ({ ...step, description: parseDescription(step.description) }))
		});
	}