}
    }

    @Override
    public void addResource(@Nonnull Project project, @Nonnull ProjectScope scope, @Nonnull Resource resource) {
        // TODO: we should not modify the underlying model here, but resources should be stored
        // TODO: in a separate field in the project, however, that could break v3 plugins
        MavenProject prj = getMavenProject(nonNull(project, "project"));

/**
 * Interface representing a Maven project which can be created using the
 * {@link org.apache.maven.api.services.ProjectBuilder} service.
 * Such objects are immutable and plugin that wish to modify such objects
 * need to do so using the {@link org.apache.maven.api.services.ProjectManager}
 * service.
 * <p>
 * Projects are created using the {@code ProjectBuilder} from a POM file

        File child = new File(tempDir.toFile(), "child/pom.xml");
        // build project once
        projectBuilder.build(child, configuration);
        // modify parent
        File parent = new File(tempDir.toFile(), "pom.xml");
        String parentContent = new String(Files.readAllBytes(parent.toPath()), StandardCharsets.UTF_8);
        parentContent = parentContent.replace(

     * @param externalRepositories The external (and already mirrored) repositories to merge into the result list, may
     *            be {@code null}.
     * @param request The project building request holding further settings like repository settings, must not be
     *            {@code null}.
     * @return The effective artifact repositories, never {@code null}.
     * @throws InvalidRepositoryException
     */

                        if (file.exists()) {
                            if (!file.delete()) {
                                // sleep for 10ms just in case this is windows holding a file lock
                                try {
                                    Thread.sleep(10);
                                } catch (InterruptedException ie) {
                                    // ignore

     */
    @Nonnull
    Map<String, String> getProperties(@Nonnull Project project);

    /**
     * Set a given project property.
     *
     * @param project the project to modify
     * @param key they property's key
     * @param value the value or {@code null} to unset the property
     */
    void setProperty(@Nonnull Project project, @Nonnull String key, @Nullable String value);