send tx

async _sendTransaction(fromAddresses, toAddresses) {
        const oTransaction = await this._oTransactionsManager._createTransaction(
            fromAddresses,
            toAddresses,
            undefined, // nonce
            undefined, // timeLock
            undefined, // version @FIXME This is not calculated if validateVersion === false,
            undefined, // txId
            false, false, true, true, true, false,
        );

        const fee = this._oTransactionsManager.wizard.calculateFeeWizzard(oTransaction.serializeTransaction(true));

        // @TODO find a way to distribute the fee for multi inputs
        oTransaction.from.addresses[0].amount += fee;

        oTransaction.from.addresses = await Promise.all(oTransaction.from.addresses.map(async (aFromAddress) => {
            const aFromAddressResult     = aFromAddress;
            aFromAddressResult.signature = await this._oWallet.getAddress(aFromAddress.address).signTransaction(oTransaction, aFromAddress.password);

            delete aFromAddressResult.password;

            return aFromAddressResult;
        }));

        // This is needed because the fromAmount is changing
        oTransaction.serializeTransaction(true);

        try {
            oTransaction.isTransactionOK();
        } catch (e) {
            throw new Error(`Validation for the transaction failed. Error: ${e.message}`);
        }

        await this._oTransactionsManager.pendingQueue.includePendingTransaction(oTransaction, undefined, true);
        return oTransaction.txId.toString('hex');
    }