src/vs/workbench/api/common/extHostFileSystemEventService.ts/ExtHostFileSystemEventService/createFileSystemWatcher
class ExtHostFileSystemEventService:	createFileSystemWatcher(globPattern: string | IRelativePattern, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean): vscode.FileSystemWatcher {
		return new FileSystemWatcher(this._onFileSystemEvent.event, globPattern, ignoreCreateEvents, ignoreChangeEvents, ignoreDeleteEvents);
	}