<configuration>
      <![CDATA[
<distributionManagement>
  <!-- use the following if you're not using a snapshot version. -->
  <repository>
    <id>repo</id>
    <name>Repository Name</name>
    <url>scp://host/path/to/repo</url>
  </repository>
  <!-- use the following if you ARE using a snapshot version. -->
  <snapshotRepository>
    <id>repo</id>
    <name>Repository Name</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>

  <groupId>cyclic-reference</groupId>
  <artifactId>parent</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <modules>
    <module>module-a</module>
    <module>module-b</module>
  </modules>

  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>example.eclipse-548652</groupId>
    <artifactId>parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>child</artifactId>
  <packaging>jar</packaging>

         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>test</groupId>
    <artifactId>import</artifactId>
    <version>0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>test</groupId>
                <artifactId>mydep</artifactId>

  <modelVersion>4.0.0</modelVersion>
  <groupId>org.apache.maven.tests</groupId>
  <artifactId>MNG-6716</artifactId>
  <packaging>jar</packaging>
  <version>0.1-SNAPSHOT</version>

  <mailingLists>
    <mailingList>
      <name>blah</name>
    </mailingList>
  </mailingLists>

  <build>
      <testSourceDirectory>../sibling/src-test</testSourceDirectory>

 */
final class SubscriberRegistry {

  /**
   * All registered subscribers, indexed by event type.
   *
   * <p>The {@link CopyOnWriteArraySet} values make it easy and relatively lightweight to get an
   * immutable snapshot of all current subscribers to an event without any locking.
   */
  private final ConcurrentMap<Class<?>, CopyOnWriteArraySet<Subscriber>> subscribers =
      Maps.newConcurrentMap();

            return switch (repositoryMetadata.getNature()) {
                case RepositoryMetadata.RELEASE_OR_SNAPSHOT -> Nature.RELEASE_OR_SNAPSHOT;
                case RepositoryMetadata.SNAPSHOT -> Nature.SNAPSHOT;
                default -> Nature.RELEASE;
            };
        } else {
            return Nature.RELEASE;
        }
    }

    @Override
    public Map<String, String> getProperties() {

  <modelVersion>4.0.0</modelVersion>

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

  <artifactId>child-artifact-id</artifactId>
  <name>Model urls inheritance test child</name>

  <modelVersion>4.0.0</modelVersion>

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

  <artifactId>child-artifact-id</artifactId>
  <name>Model urls inheritance test child</name>

  <modelVersion>4.0.0</modelVersion>
  <groupId>com.example.group</groupId>
  <artifactId>testinvalidpom</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>the.group.id</groupId>
          <artifactId>the.artifact</artifactId>
          <version/>
        </plugin>