NIHVIVO-3087 Improve handling of method invocation in argumentless method dump. Add unit test for this case.

webapp/src/freemarker/ext/beans/WrapperExtractor.java

@@ -0,0 +1,19 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
+package freemarker.ext.beans;
+
+/**
+ * Class to extract wrapper used to wrap an object into a template model object. 
+ * Used as workaround to gap in Freemarker template model API (can't get wrapper
+ * for an arbitrary template model object).
+ */
+public class WrapperExtractor {
+    
+    public static BeansWrapper getWrapper(BeanModel model) {
+        return model.wrapper;
+    }
+    
+    public static int getWrapperExposureLevel(BeanModel model) {
+        return model.wrapper.getExposureLevel();
+    }
+}