changed = true;
        } else {
            changed = metadata.merge(this.metadata);
        }

        // beware meta-versions!
        String version = metadata.getVersion();
        if (Artifact.LATEST_VERSION.equals(version) || Artifact.RELEASE_VERSION.equals(version)) {
            // meta-versions are not valid <version/> values...don't write them.
            metadata.setVersion(null);
        }

 * Plugin metadata contains G level list of "prefix" to A mapping for plugins present under this G.
 */
class PluginsMetadataGenerator implements MetadataGenerator {
    private static final String PLUGIN_DESCRIPTOR_LOCATION = "META-INF/maven/plugin.xml";

    private final Map<Object, PluginsMetadata> processedPlugins;

    private final Date timestamp;

    PluginsMetadataGenerator(RepositorySystemSession session, InstallRequest request) {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven;

import java.util.Set;

/**
 * @deprecated use {@code META-INF/maven/extension.xml} to define artifacts exported by Maven core extensions.
 */
@Deprecated
public interface ArtifactFilterManagerDelegate {

    void addExcludes(Set<String> excludes);

    }

    @Override
    public String getMavenVersion() {
        return mavenVersion;
    }

    private String loadMavenVersion() {
        Properties props = new Properties();

        String resource = "META-INF/maven/org.apache.maven/maven-core/pom.properties";

        try (InputStream is = DefaultRuntimeInformation.class.getResourceAsStream("/" + resource)) {
            if (is != null) {
                props.load(is);

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: jdcasey Build-Jdk: 1.5.0_07 META-INF/plexus/components.xml org.apache.maven.artifact.factory.ArtifactFactory test org.apache.maven.core.test.MyArtifactFactory org/apache/maven/core/test/MyArtifactFactory.class package org.apache.maven.core.test; public synchronized class MyArtifactFactory implements org.apache.maven.artifact.factory.ArtifactFactory { private static final boolean OPTIONAL...

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: jdcasey Build-Jdk: 1.5.0_07 META-INF/plexus/components.xml org.apache.maven.artifact.factory.ArtifactFactory test org.apache.maven.core.test.MyArtifactFactory org/apache/maven/core/test/MyArtifactFactory.class package org.apache.maven.core.test; public synchronized class MyArtifactFactory implements org.apache.maven.artifact.factory.ArtifactFactory { private static final boolean OPTIONAL...

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: BEBE Build-Jdk: 1.6.0_07 META-INF/maven/plugin.xml A test plugin to assist testing of Maven core. org.apache.maven.plugins maven-clean-plugin 0.1 clean false true clean Does nothing. false true false false false true org.apache.maven.plugin.coreit.ItMojo java per-lookup once-per-session org.apache.maven maven-plugin-api jar 2.0 org/apache/maven/plugin/coreit/ItMojo.class package org...

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: BEBE Build-Jdk: 1.6.0_07 META-INF/maven/plugin.xml A test plugin to assist testing of Maven core. org.apache.maven.plugins maven-jar-plugin 0.1 jar false true jar Does nothing. runtime false true false false false true org.apache.maven.plugin.coreit.ItMojo java per-lookup once-per-session org.apache.maven maven-plugin-api jar 2.0 org/apache/maven/plugin/coreit/ItMojo.class package o...

        <artifactId>maven-api-core</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-api-meta</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-api-model</artifactId>

META-INF/MANIFEST.MF Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Created-By: Apache Maven Built-By: BEBE Build-Jdk: 1.6.0_07 META-INF/maven/plugin.xml A test plugin to assist testing of Maven core. org.apache.maven.plugins maven-compiler-plugin 0.1 compiler false true testCompile Does nothing. test false true false false false true org.apache.maven.plugin.coreit.TestMojo java per-lookup once-per-session compile Does nothing. compile false true false false false true org.apache.mav...