Adds implementation of atPathEvaluater
diff --git a/webapp/src/main/java/domainapp/webapp/application/services/AtPathEvaluaterImpl.java b/webapp/src/main/java/domainapp/webapp/application/services/AtPathEvaluaterImpl.java
new file mode 100644
index 0000000..467a7f2
--- /dev/null
+++ b/webapp/src/main/java/domainapp/webapp/application/services/AtPathEvaluaterImpl.java
@@ -0,0 +1,27 @@
+package domainapp.webapp.application.services;
+
+import domainapp.modules.simple.dom.so.SimpleObject;
+
+import org.apache.causeway.extensions.secman.applib.tenancy.spi.ApplicationTenancyEvaluator;
+import org.apache.causeway.extensions.secman.applib.user.dom.ApplicationUser;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class AtPathEvaluaterImpl implements ApplicationTenancyEvaluator {
+
+    public boolean handles(Class<?> cls) {
+        return cls == SimpleObject.class;
+    }
+
+    @Override
+    public String hides(Object domainObject, ApplicationUser applicationUser) {
+        SimpleObject object = (SimpleObject) domainObject;
+        return object.getName().startsWith("F") ? "hidden" : null;
+    }
+
+    @Override
+    public String disables(Object domainObject, ApplicationUser applicationUser) {
+        return "";
+    }
+}