src/vs/workbench/common/views.ts/ViewsRegistry/getViewWelcomeContent
class ViewsRegistry:	getViewWelcomeContent(id: string): IViewContentDescriptor[] {
		const result: IViewContentDescriptor[] = [];
		this._viewWelcomeContents.forEach(id, descriptor => result.push(descriptor));
		return result.sort(compareViewContentDescriptors);
	}