tests improved, bug in (issue #58 detected):

- return statements need to be executed after post-event (since nothing gets executed after return)

VRL/VRL-Lang/src/test/resources/eu/mihosoft/vrl/lang/Instrumentation04.groovy

@@ -0,0 +1,23 @@
+/* global comment*/
+
+package my.testpackage;
+
+/**
+ * class MyFileClass
+ */
+@eu.mihosoft.vrl.instrumentation.VRLVisualization
+public class MyFileClass {
+
+    private MyFileClass m1(int a) {
+        println(a)
+        return this;
+    }
+
+    private MyFileClass m2() {
+        return new MyFileClass().m1(1).m1(2);
+    }
+
+    public static void main(String[] args) {
+        new MyFileClass().m2();
+    }
+}