Works

buisnesslogic/src/main/java/com/plannaplan/entities/Assignment.java

@@ -23,4 +23,15 @@ public class Assignment {
         this.commision = commision;
         this.group = group;
     }
+
+    public Assignment() {
+    }
+
+    public Long getId() {
+        return this.id;
+    }
+
+    public Groups getGroup() {
+        return this.group;
+    }
 }