*
     * @param classLoader The class loader to load referenced types from, may be {@code null}.
     * @return This request for chaining, never {@code null}.
     */
    BeanConfigurationRequest setClassLoader(ClassLoader classLoader);

    /**
     * Gets the optional preprocessor for configuration values.
     *
     * @return The preprocessor for configuration values or {@code null} if none.
     */

        }

        return null;
    }

    @Override
    public ClassLoader getClassLoader() {
        return classLoader;
    }

    @Override
    public DefaultBeanConfigurationRequest setClassLoader(ClassLoader classLoader) {
        this.classLoader = classLoader;
        return this;
    }

    @Override
    public BeanConfigurationValuePreprocessor getValuePreprocessor() {