@CheckForNull
    @Override
    public CNode describe(GlobalConfigurationCategory instance, ConfigurationContext context) {

        final Mapping mapping = new Mapping();
        Jenkins.get().getExtensionList(Descriptor.class).stream()
                .filter(this::filterDescriptors)
                .forEach(d -> describe(d, mapping, context));
        return mapping;
    }
@author <a href="mailto:nicolas.deloof@gmail.com">Nicolas De Loof</a>
plugin/src/main/java/io/jenkins/plugins/casc/impl/configurators/GlobalConfigurationCategoryConfigurator.java