### Question:
BridgeSerializationUtils { public static byte[] serializeReleaseRequestQueue(ReleaseRequestQueue queue) { List<ReleaseRequestQueue.Entry> entries = queue.getEntries(); byte[][] bytes = new byte[entries.size() * 2][]; int n = 0; for (ReleaseRequestQueue.Entry entry : entries) { bytes[n++] = RLP.encodeElement(entry.getDestination().getHash160()); bytes[n++] = RLP.encodeBigInteger(BigInteger.valueOf(entry.getAmount().getValue())); } return RLP.encodeList(bytes); } private  BridgeSerializationUtils(); static byte[] serializeMap(SortedMap<Keccak256, UldTransaction> map); static SortedMap<Keccak256, UldTransaction> deserializeMap(byte[] data, NetworkParameters networkParameters, boolean noInputsTxs); static byte[] serializeUTXOList(List<UTXO> list); static List<UTXO> deserializeUTXOList(byte[] data); static byte[] serializeSet(SortedSet<Sha256Hash> set); static SortedSet<Sha256Hash> deserializeSet(byte[] data); static byte[] serializeMapOfHashesToLong(Map<Sha256Hash, Long> map); static Map<Sha256Hash, Long> deserializeMapOfHashesToLong(byte[] data); static byte[] serializeFederation(Federation federation); static Federation deserializeFederation(byte[] data, Context uldContext); static byte[] serializePendingFederation(PendingFederation pendingFederation); static PendingFederation deserializePendingFederation(byte[] data); static byte[] serializeElection(ABICallElection election); static ABICallElection deserializeElection(byte[] data, AddressBasedAuthorizer authorizer); static byte[] serializeOneOffLockWhitelist(Pair<List<OneOffWhiteListEntry>, Integer> data); static byte[] serializeUnlimitedLockWhitelist(List<UnlimitedWhiteListEntry> entries); static Pair<HashMap<Address, OneOffWhiteListEntry>, Integer> deserializeOneOffLockWhitelistAndDisableBlockHeight(byte[] data, NetworkParameters parameters); static Map<Address, UnlimitedWhiteListEntry> deserializeUnlimitedLockWhitelistEntries(byte[] data, NetworkParameters parameters); static byte[] serializeCoin(Coin coin); @Nullable static Coin deserializeCoin(byte[] data); static byte[] serializeReleaseRequestQueue(ReleaseRequestQueue queue); static ReleaseRequestQueue deserializeReleaseRequestQueue(byte[] data, NetworkParameters networkParameters); static byte[] serializeReleaseTransactionSet(ReleaseTransactionSet set); static ReleaseTransactionSet deserializeReleaseTransactionSet(byte[] data, NetworkParameters networkParameters);  }### Answer:
@Test public void serializeRequestQueue() throws Exception { PowerMockito.mockStatic(RLP.class); mock_RLP_encodeElement(); mock_RLP_encodeBigInteger(); mock_RLP_encodeList(); List<ReleaseRequestQueue.Entry> sampleEntries = Arrays.asList( new ReleaseRequestQueue.Entry(mockAddressHash160("ccdd"), Coin.valueOf(10)), new ReleaseRequestQueue.Entry(mockAddressHash160("bb"), Coin.valueOf(50)), new ReleaseRequestQueue.Entry(mockAddressHash160("bb"), Coin.valueOf(20)), new ReleaseRequestQueue.Entry(mockAddressHash160("aa"), Coin.valueOf(30)) ); ReleaseRequestQueue sample = new ReleaseRequestQueue(sampleEntries); byte[] result = BridgeSerializationUtils.serializeReleaseRequestQueue(sample); String hexResult = Hex.toHexString(result); StringBuilder expectedBuilder = new StringBuilder(); expectedBuilder.append("ddccdd"); expectedBuilder.append("ff0a"); expectedBuilder.append("ddbb"); expectedBuilder.append("ff32"); expectedBuilder.append("ddbb"); expectedBuilder.append("ff14"); expectedBuilder.append("ddaa"); expectedBuilder.append("ff1e"); assertEquals(expectedBuilder.toString(), hexResult); }