Changes variable order for priv_getCode (#1163)

Author: josh-richardson

besu/src/main/java/org/web3j/protocol/besu/Besu.java

@@ -72,7 +72,7 @@ Request<?, PrivCreatePrivacyGroup> privCreatePrivacyGroup(
     Request<?, PrivGetTransactionReceipt> privGetTransactionReceipt(final String transactionHash);
 
     Request<?, EthGetCode> privGetCode(
-            String address, DefaultBlockParameter defaultBlockParameter, String privacyGroupId);
+            String privacyGroupId, String address, DefaultBlockParameter defaultBlockParameter);
 
     Request<?, org.web3j.protocol.core.methods.response.EthCall> privCall(
             org.web3j.protocol.core.methods.request.Transaction transaction,

besu/src/main/java/org/web3j/protocol/besu/JsonRpc2_0Besu.java

@@ -185,12 +185,12 @@ public Request<?, PrivGetTransactionReceipt> privGetTransactionReceipt(
 
     @Override
     public Request<?, EthGetCode> privGetCode(
+            final String privacyGroupId,
             final String address,
-            final DefaultBlockParameter defaultBlockParameter,
-            final String privacyGroupId) {
+            final DefaultBlockParameter defaultBlockParameter) {
         ArrayList<String> result =
-                new ArrayList<>(Arrays.asList(address, defaultBlockParameter.getValue()));
-        if (privacyGroupId != null) result.add(privacyGroupId);
+                new ArrayList<>(
+                        Arrays.asList(privacyGroupId, address, defaultBlockParameter.getValue()));
         return new Request<>("priv_getCode", result, web3jService, EthGetCode.class);
     }
 

besu/src/main/java/org/web3j/tx/PrivateTransactionManager.java

@@ -211,7 +211,7 @@ public EthGetCode getCode(
             throws IOException {
         return this.besu
                 .privGetCode(
-                        contractAddress, defaultBlockParameter, this.getPrivacyGroupId().toString())
+                        this.getPrivacyGroupId().toString(), contractAddress, defaultBlockParameter)
                 .send();
     }
 }

besu/src/test/java/org/web3j/protocol/besu/RequestTest.java

@@ -203,14 +203,14 @@ public void testPrivGetTransactionReceipt() throws Exception {
     @Test
     public void testPrivGetCode() throws Exception {
         web3j.privGetCode(
+                        MOCK_PRIVACY_GROUP_ID.toString(),
                         "A1aVtMxLCUHmBVHXoZzzBgPbW/wj5axDpW9X8l91SGo=",
-                        DefaultBlockParameterName.LATEST,
-                        MOCK_PRIVACY_GROUP_ID.toString())
+                        DefaultBlockParameterName.LATEST)
                 .send();
 
         verifyResult(
                 "{\"jsonrpc\":\"2.0\",\"method\":\"priv_getCode\","
-                        + "\"params\":[\"A1aVtMxLCUHmBVHXoZzzBgPbW/wj5axDpW9X8l91SGo=\",\"latest\",\"DyAOiF/ynpc+JXa2YAGB0bCitSlOMNm+ShmB/7M6C4w=\"],\"id\":1}");
+                        + "\"params\":[\"DyAOiF/ynpc+JXa2YAGB0bCitSlOMNm+ShmB/7M6C4w=\",\"A1aVtMxLCUHmBVHXoZzzBgPbW/wj5axDpW9X8l91SGo=\",\"latest\"],\"id\":1}");
     }
 
     @Test