ComposableFunction.java

        Output output = Output.builder()
                .address(senderAddress)
                .assetName(LOVELACE)
                .qty(adaToLovelace(1))
                .build();

        MessageMetadata metadata = MessageMetadata.create()
                .add("Sender == Receiver");

        TxBuilder txBuilder = output.outputBuilder()
                .buildInputs(createFromSender(senderAddress, senderAddress))
                .andThen(metadataProvider(metadata))
                .andThen(OutputMergers.mergeOutputsForAddress(senderAddress))
                .andThen(balanceTx(senderAddress, 1));

        Transaction signedTransaction = TxBuilderContext.init(utxoSupplier, protocolParamsSupplier)
                .buildAndSign(txBuilder, signerFrom(sender));

        Result<String> result = transactionService.submitTransaction(signedTransaction.serialize());

https://preprod.cardanoscan.io/transaction/08d6cee3ec19f113a1fa367304d87b3346a4c45bdfcbfccee840dd315d6e0715?tab=utxo