diff --git a/test/java/foundation/pEp/jniadapter/test/utils/model/Role.java b/test/java/foundation/pEp/jniadapter/test/utils/model/Role.java
new file mode 100644
index 0000000..82e8c0e
--- /dev/null
+++ b/test/java/foundation/pEp/jniadapter/test/utils/model/Role.java
@@ -0,0 +1,19 @@
+package foundation.pEp.jniadapter.test.utils.model;
+
+public enum Role {
+    ALICE() {
+        public String toString() {
+            return "alice";
+        }
+    },
+    BOB() {
+        public String toString() {
+            return "bob";
+        }
+    },
+    CAROL() {
+        public String toString() {
+            return "carol";
+        }
+    };
+}