static ExtensionHandler missingExtensionHandler(Method method) {
        return (target, args, handleSupplier) -> {
            throw new IllegalStateException(format(
                    "Method %s.%s has no registered extension handler!",
                    method.getDeclaringClass().getSimpleName(),
                    method.getName()));
        };
    }
Returns a default handler for missing functionality. The handler will throw an exception when invoked.
@param method The method to which this specific handler instance is bound
@return An {@link ExtensionHandler} instance
core/src/main/java/org/jdbi/v3/core/extension/ExtensionHandler.java