Slot[] requiredSlots = helper.createSlots(DataType.NUMBER);
when(helper.getViewContentDisplay().getSlots()).thenReturn(
requiredSlots);
resolverProvider
.register(new FirstResourcePropertyResolverFactory(
resolverId1, DataType.NUMBER));
/* define initialization mapping */
final Map<Slot, VisualItemValueResolver> initialSlotMapping = new HashMap<Slot, VisualItemValueResolver>();
VisualItemValueResolver resolver = new ManagedVisualItemValueResolverDecorator(