}
        if (coreExtension.getVersion() != null) {
            serializer
                    .startTag(NAMESPACE, "version")
                    .text(coreExtension.getVersion())
                    .endTag(NAMESPACE, "version");
        }
        if ((coreExtension.getClassLoadingStrategy() != null)
                && !coreExtension.getClassLoadingStrategy().equals("self-first")) {

    /**
     * Set the version of the extension.
     *
     * @param version a version object.
     */
    public void setVersion(String version) {
        this.version = version;
    } // -- void setVersion( String )

    /**
     * Gets the identifier of the extension.
     *
     * @return The extension id in the form {@code <groupId>:<artifactId>:<version>}, never {@code null}.
     */

    void testIllegalCoordinatesInConstructor(String groupId, String artifactId, String version) {
        assertThrows(
                InvalidArtifactRTException.class,
                () -> new DefaultArtifact(
                        groupId, artifactId, version, scope, type, classifier, artifactHandler, false));
        if (version == null) {
            assertThrows(
                    InvalidArtifactRTException.class,

<toolchains>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.5</version>
         <vendor>sun</vendor>
     </provides>
     <configuration>
        <jdkHome>${env.JAVA_HOME}</jdkHome>
        <toolsJar>lib/tools.jar</toolsJar>
     </configuration>
  </toolchain>
  <toolchain>
     <type>jdk</type>
     <provides>
         <version>1.6</version>
         <vendor>sun</vendor>
     </provides>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.apache.maven.its.mng4034</groupId>
  <artifactId>parent</artifactId>
  <version>1.0-SNAPSHOT</version>
  <dependencies>
    <dependency>
      <groupId>org.apache.maven.its</groupId>
      <artifactId>maven-core-it-support</artifactId>
      <version>1.3</version>
      <scope>runtime</scope>
      <exclusions>
        <exclusion>
          <groupId>commons-lang</groupId>

            String type,
            String classifier,
            List<ArtifactRepository> remoteRepositories,
            String downloadUrl,
            List<String> path) {
        super(
                constructMissingArtifactMessage(
                        message, "", groupId, artifactId, version, type, classifier, downloadUrl, path),
                groupId,
                artifactId,
                version,

    }

    private String getUserAgent() {
        String version = runtimeInformation.getMavenVersion();
        version = version.isEmpty() ? version : "/" + version;
        return "Apache-Maven" + version + " (Java " + System.getProperty("java.version") + "; "
                + System.getProperty("os.name") + " " + System.getProperty("os.version") + ")";
    }

<map version="0.7.1">
<node TEXT="&#12479;&#12452;&#12488;&#12523;">
<node TEXT="&#12486;&#12473;&#12488;" MODIFIED="1237874353965" STYLE="fork"/>
</node>

      <extension>
        <groupId>org.apache.maven.its.mng3899</groupId>
        <artifactId>a</artifactId>
        <version>0.1</version>
      </extension>
      <extension>
        <groupId>org.apache.maven.its.mng3899</groupId>
        <artifactId>c</artifactId>
        <version>0.1</version>
      </extension>
    </extensions>
  </build>

  <packaging>jar</packaging>
  <version>1.1</version>
  <dependencies>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t05-c</artifactId>
      <version>1.0</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t05-d</artifactId>
      <version>1.1</version>
      <type>jar</type>