/**
     * Preprocesses the specified bean configuration value. The optional type provided to this method is a hint (not a
     * requirement) for the preprocessor to resolve the value to a compatible value or a (string) value than can be
     * unmarshalled into that type. The preprocessor is not required to perform any type conversion but should rather
     * filter out incompatible values from its result.
     *

  <name>Plexus</name>
  <version>1.0.8</version>
  <ciManagement>
    <notifiers>
      <notifier>
        <type>mail</type>
        <configuration>
          <address>******@****.***</address>
        </configuration>
      </notifier>
      <notifier>
        <type>irc</type>
        <configuration>
          <host>irc.codehaus.org</host>
          <port>6667</port>
          <channel>#plexus</channel>

        artifact = new DefaultArtifact(groupId, artifactId, versionRange, scope, type, null, artifactHandler);
        assertEquals(groupId + ":" + artifactId + ":" + type, artifact.getDependencyConflictId());
    }

    @Test
    void testGetDependencyConflictIdNullScope() {
        artifact.setScope(null);
        assertEquals(groupId + ":" + artifactId + ":" + type + ":" + classifier, artifact.getDependencyConflictId());
    }

    @Test

            List<ClassRealmConstituent> constituents) {
        this.type = type;
        this.parent = parent;
        this.parentImports = parentImports;
        this.foreignImports = foreignImports;
        this.constituents = constituents;
    }

    public RealmType getType() {
        return type;
    }

    public ClassLoader getParent() {
        return parent;
    }

import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * A type implemented by, or extended by maven plugins or extensions.
 * Maven plugins or extensions may provide implementations of those types which will be used by maven.
 * <p>
 * A type can be marked {@link Consumer} or {@link Provider} but not both. A type is assumed to be
 * {@link Consumer} if it is not marked either {@link Consumer} or {@link Provider}.

        }

        public ArtifactFactoryRequestBuilder type(String type) {
            this.type = type;
            return this;
        }

        public ArtifactFactoryRequest build() {
            return new DefaultArtifactFactoryRequest(
                    session, groupId, artifactId, version, classifier, extension, type);
        }

      <groupId>maven-test</groupId>
      <artifactId>t07-c</artifactId>
      <version>1.0</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t07-d</artifactId>
      <version>1.1</version>
      <type>jar</type>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
  </dependencies>

      <groupId>maven-test</groupId>
      <artifactId>t06-c</artifactId>
      <version>1.0</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t06-d</artifactId>
      <version>1.1</version>
      <type>jar</type>
      <scope>compile</scope>
      <optional>false</optional>
    </dependency>
  </dependencies>

    }

    @Override
    public <T> T lookup(Class<T> type) {
        return objects.stream()
                .filter(type::isInstance)
                .map(type::cast)
                .findAny()
                .orElseThrow(() -> new LookupException("No service of type " + type));
    }

    @Override
    public <T> T lookup(Class<T> type, String name) {
        return null;
    }

    @Override

    @Override
    public List<Toolchain> getToolchains(MavenSession session, String type, Map<String, String> requirements) {
        List<ToolchainModel> models = session.getRequest().getToolchains().get(type);

        return selectToolchains(models, type, requirements);
    }

    private List<Toolchain> selectToolchains(
            List<ToolchainModel> models, String type, Map<String, String> requirements) {