BAEL-1018 - Introduction to MBassador (#2576)

* BAEL-1018 - Introduction to MBassador

* BAEL-1018 - Introduction to MBassador. Add type for some of the MBassadors.

libraries/src/test/java/com/baeldung/mbassador/MBassadorAsyncDispatchTest.java

@@ -13,7 +13,7 @@ import static org.junit.Assert.assertNotNull;
 
 public class MBassadorAsyncDispatchTest {
 
-    private MBassador dispatcher = new MBassador();
+    private MBassador dispatcher = new MBassador<String>();
     private String testString;
     private AtomicBoolean ready = new AtomicBoolean(false);
 

libraries/src/test/java/com/baeldung/mbassador/MBassadorAsyncInvocationTest.java

@@ -17,7 +17,7 @@ import static org.junit.Assert.assertFalse;
 
 public class MBassadorAsyncInvocationTest {
 
-    private MBassador dispatcher = new MBassador();
+    private MBassador dispatcher = new MBassador<Integer>();
 
     private Integer testInteger;
     private String invocationThreadName;

libraries/src/test/java/com/baeldung/mbassador/MBassadorConfigurationTest.java

@@ -24,8 +24,9 @@ public class MBassadorConfigurationTest implements IPublicationErrorHandler {
 
     @Before
     public void prepareTests() {
-        dispatcher = new MBassador(this);
-        dispatcher.subscribe(this);
+
+      dispatcher = new MBassador<String>(this);
+      dispatcher.subscribe(this);
     }
 
     @Test

libraries/src/test/java/com/baeldung/mbassador/MBassadorHierarchyTest.java

@@ -9,7 +9,7 @@ import static org.junit.Assert.*;
 
 public class MBassadorHierarchyTest {
 
-    private MBassador dispatcher = new MBassador();
+    private MBassador dispatcher = new MBassador<Message>();
 
     private Message message;
     private AckMessage ackMessage;