String mvnName = jenkinsEnv.mvnFromVersion(buildOs, buildMvn)
            try {
                withEnv(["JAVA_HOME=${ tool "$jdkName" }",
                         "PATH+MAVEN=${ tool "$jdkName" }/bin:${tool "$mvnName"}/bin",
                         "MAVEN_OPTS=-Xms2g -Xmx4g -Djava.awt.headless=true"]) {                   

            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"
        }
      }
    }

            String mvnName = jenkinsEnv.mvnFromVersion(buildOs, buildMvn)
            try {
                withEnv(["JAVA_HOME=${ tool "$jdkName" }",
                         "PATH+MAVEN=${ tool "$jdkName" }/bin:${tool "$mvnName"}/bin",
                         "MAVEN_OPTS=-Xms2g -Xmx4g -Djava.awt.headless=true"]) {                   

 with its <<<DefaultArtifact>>> implementation ({{{./xref/org/apache/maven/artifact/DefaultArtifact.html}source}}).

 The jar file is executable and provides a little tool to display how Maven parses and compares versions:

+----+
$ java -jar maven-artifact-*.jar 3.2.4-alpha-1 3.2.4-SNAPSHOT 3.2.4.0
Display parameters as parsed by Maven (in canonical form) and comparison result:

[![Jenkins tests](https://img.shields.io/jenkins/t/https/ci-maven.apache.org/job/Maven/job/maven-box/job/maven/job/master.svg?)][test-results]


Apache Maven is a software project management and comprehension tool. Based on
the concept of a project object model (POM), Maven can manage a project's
build, reporting and documentation from a central piece of information.

  <version>2.0</version>
  <description>Maven is a project development management and comprehension tool. Based on the concept of a project object model: builds, dependency management, documentation creation, site publication, and distribution publication are all controlled from the declarative file. Maven can be extended by plugins to utilise a number of other development tools for reporting or the build process.</description>
  <url>http://maven.apache.org/maven2/</url>

                          Apache Maven

  What is it?
  -----------

  Maven is a software project management and comprehension tool. Based on
  the concept of a Project Object Model (POM), Maven can manage a project's
  build, reporting and documentation from a central piece of information.

  Documentation
  -------------

  The most up-to-date documentation can be found at https://maven.apache.org/.

  Release Notes
  -------------

  <artifactId>maven-parent</artifactId>
  <version>5</version>
  <packaging>pom</packaging>
  <name>Apache Maven</name>
  <description>
    Maven is a software project management and comprehension tool. Based on the concept of a project object model
    (POM), Maven can manage a project's build, reporting and documentation from a central piece of information.
  </description>
  <url>http://maven.apache.org/</url>

  <artifactId>maven-parent</artifactId>
  <version>5</version>
  <packaging>pom</packaging>
  <name>Apache Maven</name>
  <description>
    Maven is a software project management and comprehension tool. Based on the concept of a project object model
    (POM), Maven can manage a project's build, reporting and documentation from a central piece of information.
  </description>
  <url>http://maven.apache.org/</url>

  <version>2.0</version>
  <description>Maven is a project development management and comprehension tool. Based on the concept of a project object model: builds, dependency management, documentation creation, site publication, and distribution publication are all controlled from the declarative file. Maven can be extended by plugins to utilise a number of other development tools for reporting or the build process.</description>
  <url>http://maven.apache.org/maven2/</url>