refactored BlockchainQueryService;

core

@@ -1 +1 @@
-Subproject commit 39cb8acae2ac71124301b833fa5c7fe9d41f6aa3
+Subproject commit 0f019decc04469e4be84249710cfdb18889da21c

framework

@@ -1 +1 @@
-Subproject commit c57fde469da35912ffd1f0aaa58f75ea16be9774
+Subproject commit a053557ebd44c615a35b89255bad809844d1f9ba

libs/utils

@@ -1 +1 @@
-Subproject commit 51042eea032c442f603f035db88e103c4eafd800
+Subproject commit 31463f4010755362333b4fd00902ba4686c63258

samples/sdk-samples/src/test/java/com/jdchain/samples/sdk/QuerySample.java

@@ -392,7 +392,7 @@ public class QuerySample extends SampleBase {
      */
     @Test
     public void getLatestEvent() {
-        Event event = blockchainService.getLatestEvent(ledger, sampleEvent);
+        Event event = blockchainService.getLatestSystemEvent(ledger, sampleEvent);
         Assert.assertNull(event);
     }