src/vs/platform/remote/common/remoteAuthorityResolver.ts/RemoteAuthorityResolverError/isNoResolverFound
class RemoteAuthorityResolverError:	public static isNoResolverFound(err: any): err is RemoteAuthorityResolverError {
		return (err instanceof RemoteAuthorityResolverError) && err._code === RemoteAuthorityResolverErrorCode.NoResolverFound;
	}