ModelBuildingRequest request) {
        // We only check for groupId/artifactId/version/classifier cause if there is another
        // module with the same groupId/artifactId/version/classifier this will fail the build
        // earlier like "Project '...' is duplicated in the reactor.
        // So it is sufficient to check only groupId/artifactId/version/classifier and not the
        // packaging type.

   * described in the class documentation.
   *
   * @throws NullPointerException if any of {@code elements} is null
   * @since 6.0
   */
  public static <E> ImmutableMultiset<E> copyOf(E[] elements) {
    return copyFromElements(elements);
  }

  /**
   * Returns an immutable multiset containing the given elements, in the "grouped iteration order"

    }

    protected File projectFile(String name) {
        return projectFile("maven", name);
    }

    protected File projectFile(String groupId, String artifactId) {
        return new File(getLocalRepositoryPath(), "/" + groupId + "/poms/" + artifactId + "-1.0.pom");
    }

    // ----------------------------------------------------------------------
    // The local repository for this category of tests

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>inheritance</groupId>
    <artifactId>parent</artifactId>
    <version>11-SNAPSHOT</version>
  </parent>

  <artifactId>child-artifact-id</artifactId>
  <name>Model inheritance test parent: module directory != artifactId</name>

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>inheritance</groupId>
    <artifactId>parent</artifactId>
    <version>11-SNAPSHOT</version>
  </parent>

  <artifactId>inheritance</artifactId><!-- same as directory name -->
  <name>Model urls inheritance test child</name>

  </properties>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.jspecify</groupId>
        <artifactId>jspecify</artifactId>
        <version>${jspecify.version}</version>
      </dependency>
      <dependency>
        <groupId>com.google.errorprone</groupId>
        <artifactId>error_prone_annotations</artifactId>
        <version>${error_prone_annotations.version}</version>

  <artifactId>aid</artifactId>
  <groupId>gid</groupId>
  <version>0.1</version>

  <dependencies>
    <dependency>
      <groupId>test</groupId>
      <artifactId>a</artifactId>
      <version>0.2</version>
      <scope>system</scope>
      <systemPath>${basedir}/lib/a.jar</systemPath>
    </dependency>
    <dependency>
      <groupId>test</groupId>
      <artifactId>b</artifactId>

     */
    private String getPluginKey(Plugin plugin) {
        String groupId = plugin.getGroupId();
        String artifactId = plugin.getArtifactId();

        // Default groupId for Maven plugins
        if (groupId == null && artifactId != null && artifactId.startsWith(MAVEN_PLUGIN_PREFIX)) {
            groupId = DEFAULT_MAVEN_PLUGIN_GROUP_ID;
        }

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>inheritance</groupId>
  <artifactId>parent</artifactId>
  <version>11-SNAPSHOT</version>

  <name>Model inheritance test parent: module path != artifactId</name>

  <modules>
    <module>child</module>
  </modules>

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>inheritance</groupId>
  <artifactId>parent</artifactId>
  <version>11-SNAPSHOT</version>

  <name>Model urls inheritance test parent</name>