How to use the @zilliqa-js/account.Transaction.reject function in @zilliqa-js/account

async getTransaction(txHash: string): Promise {
    try {
      const response = await this.provider.send(
        RPCMethod.GetTransaction,
        txHash,
      );

      if (response.error) {
        return Promise.reject(response.error);
      }

      return response.result.receipt.success
        ? Transaction.confirm(toTxParams(response), this.provider)
        : Transaction.reject(toTxParams(response), this.provider);
    } catch (err) {
      throw err;
    }
  }