PluginDescriptor pluginDescriptor = pluginDescriptorCache.get(cacheKey, () -> {
            org.eclipse.aether.artifact.Artifact artifact =
                    pluginDependenciesResolver.resolve(plugin, repositories, session);

            Artifact pluginArtifact = RepositoryUtils.toArtifact(artifact);

            PluginDescriptor descriptor = extractPluginDescriptor(pluginArtifact, plugin);

     * @param artifactId The artifact id of the cache record, must not be {@code null}.
     * @param version The version of the cache record, must not be {@code null}.
     * @param tag The tag of the cache record, must not be {@code null}.
     * @param data The data to store in the cache, must not be {@code null}.
     */
    void put(String groupId, String artifactId, String version, String tag, Object data);

    /**

    /**
     * Creates POM artifact out of passed in artifact by dropping classifier (if exists) and rewriting extension to
     * "pom". Unconditionally, unlike {@link #toPomArtifact(Artifact)} that does this only for artifacts without
     * classifiers.
     *
     * @since 4.0.0
     */
    public static Artifact toPomArtifactUnconditionally(Artifact artifact) {

        public void setBlacklisted(boolean blackListed) {}

        @Override
        public org.apache.maven.artifact.Artifact find(org.apache.maven.artifact.Artifact artifact) {
            return null;
        }

        @Override
        public List<String> findVersions(org.apache.maven.artifact.Artifact artifact) {
            return Collections.emptyList();
        }

        @Override

import javax.inject.Named;
import javax.inject.Singleton;

import org.apache.maven.artifact.resolver.ResolutionNode;
import org.apache.maven.artifact.versioning.ArtifactVersion;
import org.apache.maven.artifact.versioning.OverConstrainedVersionException;

/**
 * Resolves conflicting artifacts by always selecting the oldest declaration. Oldest is defined as the

    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-annotations</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-metadata</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-support</artifactId>
    </dependency>
    <dependency>
      <groupId>org.codehaus.plexus</groupId>

        assertEquals("bar", project.getProperties().getProperty("foo"));

        ArrayList<Artifact> artifacts = new ArrayList<>(project.getArtifacts());

        assertEquals(1, artifacts.size());
        assertEquals(INJECTED_ARTIFACT_ID, artifacts.get(0).getArtifactId());
    }

    @Test
    void testReactorDependencyInjection() throws Exception {

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;

import org.apache.maven.api.Session;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.InvalidRepositoryException;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.execution.DefaultMavenExecutionRequest;

        setForceUpdate(request.isForceUpdate());
    }

    public Artifact getArtifact() {
        return artifact;
    }

    public ArtifactResolutionRequest setArtifact(Artifact artifact) {
        this.artifact = artifact;

        return this;
    }

    public ArtifactResolutionRequest setArtifactDependencies(Set<Artifact> artifactDependencies) {
        this.artifactDependencies = artifactDependencies;

        List<String> elements = project.getCompileClasspathElements();
        assertEquals(2, elements.size());

        @SuppressWarnings("deprecation")
        List<Artifact> artifacts = project.getCompileArtifacts();
        assertEquals(1, artifacts.size());
        assertTrue(artifacts.get(0).getFile().getName().endsWith("tools.jar"));
    }