}

    @Deprecated
    @Override
    public File locateExistingPom(File project) {
        Path path = locateExistingPom(project != null ? project.toPath() : null);
        return path != null ? path.toFile() : null;
    }

    @Override
    public Path locateExistingPom(Path project) {
        if (project == null || Files.isDirectory(project)) {

     * Returns the file containing the pom or null if a pom can not be found at the given file or in the given directory.
     *
     * @deprecated Use {@link #locateExistingPom(Path)} instead.
     */
    @Deprecated
    default File locateExistingPom(File project) {
        Path path = locateExistingPom(project != null ? project.toPath() : null);
        return path != null ? path.toFile() : null;
    }

    /**

                if (rootDirectory == null) {
                    return;
                }
                List<Path> toLoad = new ArrayList<>();
                Path root = defaultModelBuilder.getModelProcessor().locateExistingPom(rootDirectory);
                toLoad.add(root);
                while (!toLoad.isEmpty()) {
                    Path pom = toLoad.remove(0);
                    try {

        }
        return pom;
    }

    @Deprecated
    @Override
    public File locateExistingPom(File projectDirectory) {
        Path path = locateExistingPom(projectDirectory.toPath());
        return path != null ? path.toFile() : null;
    }

    @Override
    public Path locateExistingPom(Path projectDirectory) {
        // Note that the ModelProcessor#locatePom never returns null

        String norm = relative.replace('\\', File.separatorChar).replace('/', File.separatorChar);
        Path path = getPath().getParent().resolve(norm);
        Path relatedPom = locator.locateExistingPom(path);
        if (relatedPom != null) {
            return new PathSource(relatedPom);
        }
        return null;
    }

    @Override
    public boolean equals(Object o) {

         * Returns the file containing the pom or null if a pom can not be
         * found at the given file or in the given directory.
         *
         * @since 4.0.0
         */
        @Nullable
        Path locateExistingPom(@Nonnull Path project);
    }

    @Nullable
    ModelSource resolve(@Nonnull ModelLocator modelLocator, @Nonnull String relative);

    @Nonnull
    static ModelSource fromPath(@Nonnull Path path) {

        relPath = relPath.replace('\\', File.separatorChar).replace('/', File.separatorChar);

        Path path = getPath().getParent().resolve(relPath);

        Path relatedPom = locator.locateExistingPom(path);

        if (relatedPom != null) {
            return new FileModelSource(relatedPom.normalize());
        }

        return null;
    }

    @Override
    public URI getLocationURI() {

        return Holder.deref(modelByGA.get(new GAKey(groupId, artifactId)));
    }

    @Override
    public Path locate(Path path) {
        File file = modelLocator.locateExistingPom(path.toFile());
        return file != null ? file.toPath() : null;
    }

    static class GAKey {
        private final String groupId;
        private final String artifactId;