ImmutableList.Builder<Object> requestedAttributesBuilder = new ImmutableList.Builder<>();
        for (Attribute<?> att : requestedAttributes.keySet()) {
            requestedAttributesBuilder.add(ImmutableMap.of("name", att.getName(), "value", requestedAttributes.getAttribute(att).toString()));
        }
        model.put("requestedAttributes", requestedAttributesBuilder.build());

        return model;
    }