src/vs/workbench/browser/parts/statusbar/statusbarItem.ts/StatusbarEntryItem/isEqualTooltip
class StatusbarEntryItem:	private isEqualTooltip({ tooltip }: IStatusbarEntry, { tooltip: otherTooltip }: IStatusbarEntry) {
		if (tooltip === undefined) {
			return otherTooltip === undefined;
		}

		if (isMarkdownString(tooltip)) {
			return isMarkdownString(otherTooltip) && markdownStringEqual(tooltip, otherTooltip);
		}

		return tooltip === otherTooltip;
	}