IsJsonFilter filter = (IsJsonFilter) muleContext.getRegistry().lookupObject("jsonFilter");
assertNotNull(filter);
assertTrue(filter.isValidateParsing());
ObjectToJson serializer = (ObjectToJson) muleContext.getRegistry().lookupObject("fruitCollectionToJson");
serializer.initialise();
assertNotNull(serializer);
assertEquals(String.class, serializer.getReturnClass());
assertEquals(FruitCollection.class, serializer.getSourceClass());
assertEquals(3, serializer.getSerializationMixins().size());