initialSlotMapping.put(requiredSlots[0], resolver);
slotMappingInitializer = new TestSlotMappingInitializer(
initialSlotMapping);
DefaultVisualizationModel model = createViewModel(new ResourceByUriMultiCategorizer());
model.setContentResourceSet(new DefaultResourceSet());
Resource resource1 = ResourceSetTestUtils.createResource(1);
resource1.putValue(property1, 1);
resource1.putValue(property2, 2);