Clearing the map between request id and the ApiCallable class because when we disconnect from one node, all previous message ids should be reset

graphenej/src/main/java/cy/agorise/graphenej/api/android/NetworkService.java

@@ -699,6 +699,9 @@ public class NetworkService extends Service {
 
             isLoggedIn = false;
 
+            // Clearing previous request id to class mappings
+            mRequestClassMap.clear();
+
             if(mSelectedNode != null){
                 // Marking the selected node as not connected
                 mSelectedNode.setConnected(false);