}

    private org.apache.maven.impl.DefaultToolchainManager getToolchainManager(Lookup lookup, Logger logger) {
        return getToolchainManager(
                lookup.lookupMap(ToolchainFactory.class),
                lookup.lookupMap(org.apache.maven.api.services.ToolchainFactory.class),
                logger);
    }

    private org.apache.maven.impl.DefaultToolchainManager getToolchainManager(

     * @param <T> The component type.
     * @throws LookupException if there is some provisioning related issue.
     */
    @Nonnull
    <T> Map<String, T> lookupMap(Class<T> type);

        return Optional.empty();
    }

    @Override
    public <T> List<T> lookupList(Class<T> type) {
        return List.of();
    }

    @Override
    public <T> Map<String, T> lookupMap(Class<T> type) {
        return Map.of();
    }