public T FindTransactionResultExtension <T>(string transactionId) { TransactionResult transactionResult; T t; lock (this.syncLock) { if (!this.transactionResults.TryGetValue(transactionId, out transactionResult)) { throw Fx.AssertAndFailFastService(SRClient.CannotFindTransactionResult(transactionId)); } t = transactionResult.Extensions.Find <T>(); } return(t); }