}

    private org.apache.maven.impl.DefaultToolchainManager getDelegate() {
        Map<String, ToolchainFactory> v3Factories = lookup.lookupMap(ToolchainFactory.class);
        Map<String, org.apache.maven.api.services.ToolchainFactory> v4Factories =
                lookup.lookupMap(org.apache.maven.api.services.ToolchainFactory.class);
        Map<String, org.apache.maven.api.services.ToolchainFactory> allFactories = new HashMap<>();

        holder.addCommandRegistry(builtins);

        // gather commands
        Map<String, ShellCommandRegistryFactory> factories =
                context.lookup.lookupMap(ShellCommandRegistryFactory.class);
        for (Map.Entry<String, ShellCommandRegistryFactory> entry : factories.entrySet()) {
            holder.addCommandRegistry(entry.getValue().createShellCommandRegistry(context));
        }

        executionRequestPopulator = container.lookup(MavenExecutionRequestPopulator.class);

        modelProcessor = createModelProcessor(container);

        configurationProcessors = container.lookupMap(ConfigurationProcessor.class);

        toolchainsBuilder = container.lookup(ToolchainsBuilder.class);

        dispatcher = container.lookup(SecDispatcher.class);

        return container;
    }