@Override
    default Optional<ExtensionHandler> createExtensionHandler(Class<?> extensionType, Method method) {
        return buildHandler(extensionType, method)
                .map(h -> h); // ugh, Java.
    }
Returns a {@link Handler} instance for executing the given SQL Object method.

@param sqlObjectType the SQL Object type
@param method        the method
@return a handler, if applicable
sqlobject/src/main/java/org/jdbi/v3/sqlobject/HandlerFactory.java