public Optional<Handler> findFor(Class<?> sqlObjectType, Method method) {
        return factories.stream()
                .flatMap(factory -> factory.buildHandler(sqlObjectType, method).stream())
                .findFirst();
    }
Registers the given handler factory with the registry.
@param factory the factory to register
@return this
sqlobject/src/main/java/org/jdbi/v3/sqlobject/Handlers.java