src/vs/workbench/contrib/welcome/gettingStarted/browser/gettingStarted.ts/GettingStartedPage/makeCategoryVisibleWhenAvailable
class GettingStartedPage:	async makeCategoryVisibleWhenAvailable(categoryID: string, stepId?: string) {
		await this.gettingStartedService.installedExtensionsRegistered;

		this.gettingStartedCategories = this.gettingStartedService.getCategories();
		const ourCategory = this.gettingStartedCategories.find(c => c.id === categoryID);
		if (!ourCategory) {
			throw Error('Could not find category with ID: ' + categoryID);
		}
		if (ourCategory.content.type !== 'steps') {
			throw Error('internaal error: category is not steps');
		}
		this.scrollToCategory(categoryID, stepId);
	}