src/vs/platform/files/common/diskFileSystemProvider.ts/AbstractDiskFileSystemProvider/refreshNonRecursiveWatchers
class AbstractDiskFileSystemProvider:	private refreshNonRecursiveWatchers(): void {

		// Buffer requests for nonrecursive watching to decide on right watcher
		// that supports potentially watching more than one path at once
		this.nonRecursiveWatchRequestDelayer.trigger(() => {
			return this.doRefreshNonRecursiveWatchers();
		}).catch(error => onUnexpectedError(error));
	}