modules = true;
                } else {
                    unknown = true;
                }
                if (selected == null) {
                    selected = type;
                } else if (unknown) {
                    // More than one filtered value, and we don't know how to handle at least one of them.

        MetadataGraphEdge res;

        res = policy.apply(e1, e2);
        assertEquals("1.1", res.getVersion(), "Wrong depth edge selected");

        res = policy.apply(e1, e3);
        assertEquals("1.2", res.getVersion(), "Wrong version edge selected");
    }
    // ------------------------------------------------------------------------------------------

                select(CommonBuilds.PROJECT_PATH_TEST, CommonBuilds.BUILD_PATH_COMPILE),
                Collections.singletonList(system),
                nonTransitiveDependencyScopes));
        result.add(internalScopeManager.createResolutionScope(
                RS_TEST_RUNTIME,
                InternalScopeManager.Mode.ELIMINATE,

                select(CommonBuilds.PROJECT_PATH_TEST, CommonBuilds.BUILD_PATH_COMPILE),
                Collections.singletonList(system),
                nonTransitiveDependencyScopes));
        result.add(internalScopeManager.createResolutionScope(
                RS_TEST_RUNTIME,
                InternalScopeManager.Mode.ELIMINATE,

                .collect(Collectors.toList());
    }

    @Override
    public ChecksumAlgorithm select(String algorithmName) {
        nonNull(algorithmName, "algorithmName");
        try {
            return new DefaultChecksumAlgorithm(checksumAlgorithmFactorySelector.select(algorithmName));
        } catch (IllegalArgumentException e) {

    Model getEffectiveModel();

    /**
     * Gets the specified raw model as it was read from a model source. Apart from basic validation, a raw model has not
     * undergone any updates by the model builder, e.g. reflects neither inheritance nor interpolation. The model
     * identifier should be from the collection obtained by {@link #getModelIds()}. As a special case, an empty string
     * can be used as the identifier for the super POM.
     *

    }

    private void injectProxy(ProxySelector selector, List<ArtifactRepository> repositories) {
        if (repositories != null && selector != null) {
            for (ArtifactRepository repository : repositories) {
                repository.setProxy(getProxy(selector, repository));
            }
        }
    }

    private org.apache.maven.repository.Proxy getProxy(ProxySelector selector, ArtifactRepository repository) {