Object key = getPluginKey().apply(element);
                    Plugin existing = master.get(key);
                    if (existing != null) {
                        existing = mergePlugin(existing, element, sourceDominant, context);
                        master.put(key, existing);
                        if (!pending.isEmpty()) {
                            predecessors.put(key, pending);

                Plugin existing = plugins.get(plugin);
                if (existing != null) {
                    if (existing.getVersion() == null) {
                        existing.setVersion(plugin.getVersion());
                        existing.setLocation("version", location);
                    }
                    plugin = existing;
                } else {

            Files.deleteIfExists(target);
            result = "";
        } else {
            String current = sha1(src);
            String existing = sourceState.get();
            if (!Objects.equals(current, existing)) {
                defaultConsumerPomArtifactTransformer.transform(project, session, src, target);
                Files.setLastModifiedTime(target, Files.getLastModifiedTime(src));

                        .expectResult(MODULE_B),
                scenario("Selected missing project as required and as optional")
                        .activeRequiredProjects("non-existing-module")
                        .activeOptionalProjects("non-existing-module")
                        .expectResult(MavenExecutionException.class, "not find the selected project"),
                scenario("Resuming from project")

                    e.printStackTrace();
                }
                throw new DIException("No binding to construct an instance for key "
                        + key.getDisplayString() + ".  Existing bindings:\n"
                        + getBoundKeys().stream()
                                .map(Key::toString)
                                .map(String::trim)
                                .sorted()

     * to be not present in any regular repository and likewise has no artifact descriptor. Artifact resolution will
     * verify the path and resolve the artifact if the path actually denotes an existing file. If the path isn't valid,
     * resolution will fail and no attempts to search local/remote repositories are made.
     */
    public static final String LOCAL_PATH = "localPath";

    int VALIDATION_LEVEL_MAVEN_2_0 = 20;

    /**
     * Denotes validation as performed by Maven 3.0. This validation level is meant for existing projects.
     */
    int VALIDATION_LEVEL_MAVEN_3_0 = 30;

    /**
     * Denotes validation as performed by Maven 3.1. This validation level is meant for existing projects.
     */
    int VALIDATION_LEVEL_MAVEN_3_1 = 31;

    /**

                for (PluginExecution element : tgt) {
                    Object key = getPluginExecutionKey().apply(element);
                    PluginExecution existing = merged.get(key);
                    if (existing != null) {
                        element = mergePluginExecution(element, existing, sourceDominant, context);
                    }
                    merged.put(key, element);
                }

            for (PluginExecution element : tgt) {
                Object key = getPluginExecutionKey().apply(element);
                PluginExecution existing = merged.get(key);
                if (existing != null) {
                    element = mergePluginExecution(element, existing, sourceDominant, context);
                }
                merged.put(key, element);
            }

            builder.executions(merged.values());

        return path;
    }

    @Deprecated
    public void merge(File existing, File result) throws RepositoryException {
        merge(existing != null ? existing.toPath() : null, result != null ? result.toPath() : null);
    }

    @Override
    public void merge(Path existing, Path result) throws RepositoryException {
        Metadata recessive = read(existing);

        merge(recessive);

        write(result, metadata);