Basic globaleventbus

pom.xml

@@ -20,6 +20,12 @@
             <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>33.4.8-jre</version>
+        </dependency>
     </dependencies>
 
 </project>