try {
                        List<Object> l = containerProvider
                                .get()
                                .lookupList(key.getTypeParameter(0).getRawType());
                        l.forEach(o -> res3.add(new Binding.BindingToInstance<>(o)));
                    } catch (Throwable e) {
                        // ignore

    }

    @Test
    void testMetadataGeneratorFactory() throws ComponentLookupException {
        List<MetadataGeneratorFactory> factories = plexusContainer.lookupList(MetadataGeneratorFactory.class);
        assertNotNull(factories);
        factories.forEach(f -> System.out.println(f.getClass().getName()));
        assertEquals(3, factories.size());
    }

    @Test

        return Optional.empty();
    }

    @Override
    public <T> Optional<T> lookupOptional(Class<T> type, String name) {
        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();
    }

    }

    private <T> Collection<T> getExtensionComponents(Collection<MavenProject> projects, Class<T> role) {
        Collection<T> foundComponents = new LinkedHashSet<>();
        foundComponents.addAll(lookup.lookupList(role));
        foundComponents.addAll(getProjectScopedExtensionComponents(projects, role));
        return foundComponents;
    }

                } catch (DIException e) {
                    return Optional.empty();
                }
            }

            @Override
            public <T> List<T> lookupList(Class<T> type) {
                return injector.getInstance(new Key<List<T>>() {});
            }

            @Override
            public <T> Map<String, T> lookupMap(Class<T> type) {

        return container.lookup(role, roleHint);
    }

    @Deprecated
    public List<Object> lookupList(String role) throws ComponentLookupException {
        return container.lookupList(role);
    }

    @Deprecated
    public Map<String, Object> lookupMap(String role) throws ComponentLookupException {
        return container.lookupMap(role);
    }

                return Optional.empty();
            }
            throw new LookupException(e);
        }
    }

    @Override
    public <T> List<T> lookupList(Class<T> type) {
        try {
            return container.lookupList(type);
        } catch (ComponentLookupException e) {
            throw new LookupException(e);
        }
    }

    @Override

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

    /**
     * Performs a collection lookup for given typed components.
     *
     * @param type The component type.
     * @return The map of components. The map may be empty if no components found.