for (String os in runITsOses) {
    for (def jdk in runITsJdks) {
        String osLabel = jenkinsEnv.labelForOS(os);
        String jdkName = jenkinsEnv.jdkFromVersion(os, "${jdk}")
        String mvnName = jenkinsEnv.mvnFromVersion(os, "${runITsMvn}")
        echo "OS: ${os} JDK: ${jdk} => Label: ${osLabel} JDK: ${jdkName} Arch: s390x"

        String stageId = "${os}-jdk${jdk}-s390x"

    string( defaultValue: 'master', description: 'Core Its branch (default master)',
            name: 'ITS_BRANCH' )
  }
  stages {
    stage("Build Maven Core") {
      steps {
        withEnv(["JAVA_HOME=${ tool "JDK 1.8 (latest)" }", "PATH+MAVEN=${tool 'Maven 3.6.3'}/bin:${env.JAVA_HOME}/bin"]) {
            sh "mvn -Drat.skip=true -T2 -B -V install -PversionlessMavenDist -Dmaven.repo.local=${env.WORKSPACE}/repo"
        }
      }
    }

  <url>http://plexus.codehaus.org/plexus-utils</url>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <!-- surefire requires plexus-utils to be jdk 1.3 compatible -->
          <source>1.3</source>
          <target>1.3</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <configuration>

if $cygwin || $mingw ; then
  [ -n "$JAVA_HOME" ] &&
    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
fi

if [ -n "$JAVA_HOME" ] ; then
  if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
    # IBM's JDK on AIX uses strange locations for the executables
    JAVACMD="$JAVA_HOME/jre/sh/java"
  else
    JAVACMD="$JAVA_HOME/bin/java"

    if [ ! -x "$JAVACMD" ] ; then

  -------------

  The full list of changes can be found at https://maven.apache.org/docs/history.html.

  System Requirements
  -------------------

  JDK:
    8 or above (this is to execute Maven - it still allows you to build against 1.3
    and prior JDK's).
  Memory:
    No minimum requirement.
  Disk:
    Approximately 10MB is required for the Maven installation itself. In addition to

Map runITsTasks = [:]
for (String os in runITsOses) {
    for (def jdk in runITsJdks) {
        String osLabel = jenkinsEnv.labelForOS(os);
        String jdkName = jenkinsEnv.jdkFromVersion(os, "${jdk}")
        String mvnName = jenkinsEnv.mvnFromVersion(os, "${runITsMvn}")
        echo "OS: ${os} JDK: ${jdk} => Label: ${osLabel} JDK: ${jdkName}"

        String stageId = "${os}-jdk${jdk}"
        String stageLabel = "Run ITs ${os.capitalize()} Java ${jdk}"

                </plugins>
            </build>
        </profile>
        <profile>
            <id>restrict-doclint</id>
            <!-- doclint is only supported by JDK 8 -->
            <activation>
                <jdk>[1.8,)</jdk>
            </activation>
            <build>
                <plugins>
                    <plugin>
                        <artifactId>maven-compiler-plugin</artifactId>

  <url>http://plexus.codehaus.org/plexus-utils</url>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <!-- surefire requires plexus-utils to be jdk 1.3 compatible -->
          <source>1.3</source>
          <target>1.3</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <configuration>

 with its <<<DefaultToolchainManagerPrivate>>> implementation ({{{./xref/org/apache/maven/toolchain/DefaultToolchainManagerPrivate.html}source}}),
 to manage toolchain selection,

 * internal JDK toolchain implementation: <<<JavaToolchain>>> interface ({{{./apidocs/org/apache/maven/toolchain/java/JavaToolchain.html}javadoc}}),
 with its <<<JavaToolchainImpl>>> implementation