List<ModelParser> parsers = container.lookupList(ModelParser.class);
            assertNotNull(parsers);
            assertEquals(1, parsers.size());
            Map<String, ModelParser> parsersMap = container.lookupMap(ModelParser.class);
            assertNotNull(parsersMap);
            assertEquals(1, parsersMap.size());
        }

        @Test
        void testGuice() throws Exception {

        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();
    }

        } catch (ComponentLookupException e) {
            throw new LookupException(e);
        }
    }

    @Override
    public <T> Map<String, T> lookupMap(Class<T> type) {
        try {
            return container.lookupMap(type);
        } catch (ComponentLookupException e) {
            throw new LookupException(e);
        }
    }

     * @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();
    }

            }
        }

        private List<Completer> mvnencCompleter(String name) {
            return List.of(new ArgumentCompleter(new StringsCompleter(
                    shellContext.lookup.lookupMap(Goal.class).keySet())));
        }

        private void mvnup(CommandInput input) {
            try {
                shellUpgradeInvoker.invoke(upgradeParser.parseInvocation(

        Map<String, Lifecycle> lifeCycles = myLifecycles.stream().collect(Collectors.toMap(Lifecycle::getId, l -> l));
        PlexusContainer mockedPlexusContainer = mock(PlexusContainer.class);
        when(mockedPlexusContainer.lookupMap(Lifecycle.class)).thenReturn(lifeCycles);

        DefaultLifecycles dl = new DefaultLifecycles(
                new DefaultLifecycleRegistry(

            lifeCycles.put(s, lifecycle);
        }

        PlexusContainer mockedContainer = mock(PlexusContainer.class);
        when(mockedContainer.lookupMap(Lifecycle.class)).thenReturn(lifeCycles);

        DefaultLifecycleRegistry reg = new DefaultLifecycleRegistry();
        return new DefaultLifecycles(reg, new DefaultLookup(mockedContainer));
    }

    }

    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<>();

        factories.put("basic", toolchainFactoryBasicType);
        factories.put("rare", toolchainFactoryRareType);

        when(lookup.lookupMap(ToolchainFactory.class)).thenReturn(factories);
        when(lookup.lookupMap(org.apache.maven.toolchain.ToolchainFactory.class))
                .thenReturn(Map.of());

        toolchainManager = new ToolchainManagerFactory(lookup, logger).v3Manager();
    }