public void start(ExtensionPointRegistry registry) {
MediatorImpl mediator = new MediatorImpl(dataBindings, transformers);
Input2InputTransformer input2InputTransformer = new Input2InputTransformer();
input2InputTransformer.setMediator(mediator);
Output2OutputTransformer output2OutputTransformer = new Output2OutputTransformer();
output2OutputTransformer.setMediator(mediator);
Exception2ExceptionTransformer exception2ExceptionTransformer = new Exception2ExceptionTransformer();
exception2ExceptionTransformer.setMediator(mediator);
transformers.addTransformer(input2InputTransformer);