* generated by the Groovy compiler
     */
    Set<String> getSyntheticClasses();

    /**
     * Generates an empty interface for the given class name.
     */
    byte[] generateSyntheticClass(String name);

    /**
     * Injects all the interfaces identified by {@link LegacyTypesSupport#getSyntheticClasses()}
     * into the given classloader.
     */

    @Override
    protected byte[] generateMissingClass(String name) {
        if (!legacyTypesSupport.getSyntheticClasses().contains(name)) {
            return null;
        }
        return legacyTypesSupport.generateSyntheticClass(name);
    }

    @Override
    protected boolean shouldTransform(String className) {