consider Join and Leave methods

examples/src/OpenDis7Examples/SimulationManager.java

@@ -48,6 +48,20 @@ public class SimulationManager
     {
         // TODO
     }
+    /**
+     * An entity can Join the simulation according to specifications
+     */
+    public void Join()
+    {
+        // TODO
+    }
+    /**
+     * An entity can Leave the simulation according to specifications
+     */
+    public void Leave()
+    {
+        // TODO
+    }
     
     /**
      * Simple simulation record type