src/vs/workbench/browser/parts/editor/noTabsTitleControl.ts/NoTabsTitleControl/getVerbosity
class NoTabsTitleControl:	private getVerbosity(style: string | undefined): Verbosity {
		switch (style) {
			case 'short': return Verbosity.SHORT;
			case 'long': return Verbosity.LONG;
			default: return Verbosity.MEDIUM;
		}
	}