*
 * @param <C> The context type.
 */
public interface ContainerCapsuleFactory<C extends LookupContext> {
    /**
     * Creates container capsule.
     */
    @Nonnull
    ContainerCapsule createContainerCapsule(
            LookupInvoker<C> invoker, C context, CoreExtensionSelector<C> coreExtensionSelector) throws Exception;

 *
 * @param <C> The context type.
 */
public class PlexusContainerCapsuleFactory<C extends LookupContext> implements ContainerCapsuleFactory<C> {
    @Override
    public ContainerCapsule createContainerCapsule(
            LookupInvoker<C> invoker, C context, CoreExtensionSelector<C> coreExtensionSelector) throws Exception {
        requireNonNull(invoker, "invoker");
        requireNonNull(context, "context");

        }
    }

    protected void container(C context) throws Exception {
        if (context.lookup == null) {
            context.containerCapsule = createContainerCapsuleFactory()
                    .createContainerCapsule(this, context, createCoreExtensionSelector());
            context.closeables.add(context::closeContainer);
            context.lookup = context.containerCapsule.getLookup();
        } else {