src/vs/workbench/browser/parts/views/viewPane.ts/ViewPane/setTitleDescription
class ViewPane:	private setTitleDescription(description: string | undefined) {
		if (this.titleDescriptionContainer) {
			this.titleDescriptionContainer.textContent = description ?? '';
			this.titleDescriptionContainer.setAttribute('title', description ?? '');
		}
		else if (description && this.titleContainer) {
			this.titleDescriptionContainer = after(this.titleContainer, $('span.description', { title: description }, description));
		}
	}