* @param artifactId never {@code null}
     * @param version can be {@code null}
     * @return the matching model or {@code null}
     * @throws IllegalStateException if version was null and multiple modules share the same groupId + artifactId
     */
    public Model get(String groupId, String artifactId, String version) {
        return modelsByGa.getOrDefault(new GAKey(groupId, artifactId), Collections.emptySet()).stream()

+-----+
${maven.home}
     |
     +--- maven.properties
+-----+

* Group configuration

 As far as properties go for an entire build the maven.properties could be placed at
 the top of the group but I'm not really sure how this might work. There could probably
 also be a directory for plugins.xml and maven.properties.

* Project configuration

                MavenProject currentProject = session.getCurrentProject();
                try {
                    BuilderCommon.attachToThread(project); // Not totally sure if this is needed for anything
                    session.setCurrentProject(project);
                    projectBuilds.add(new ProjectSegment(project, taskSegment, session));
                } finally {

    Unix-based operating systems (Linux, Solaris and Mac OS X)
      export PATH=/usr/local/apache-maven-4.x.y/bin:$PATH
    Windows
      set PATH="c:\program files\apache-maven-4.x.y\bin";%PATH%

  4) Make sure JAVA_HOME is set to the location of your JDK

  5) Run "mvn --version" to verify that it is correctly installed.

  For complete documentation, see https://maven.apache.org/download.html#Installation

  Licensing

            path = path.replace("\\", "/");
            // ---------------------------------------------------------------------------------
            // I'm not sure if this last regexp was really intended to disallow the usage of
            // network paths as user.home directory. Unfortunately it did. I removed it and
            // have not detected any problems yet.

     * is in the Antlr plugin which comes bundled with a version of Antlr but the user often times needs
     * to use a specific version. We need to make sure the version that they specify takes precedence.
     */
    @Test
    void testMojoWhereInternallyStatedDependencyIsOverriddenByProject() throws Exception {}

    /**

        ArtifactHandler handler = newHandler(artifact);

        /*
         * NOTE: From Artifact.hasClassifier(), an empty string and a null both denote "no classifier". However, some
         * plugins only check for null, so be sure to nullify an empty classifier.
         */
        org.apache.maven.artifact.Artifact result = new org.apache.maven.artifact.DefaultArtifact(
                artifact.getGroupId(),
                artifact.getArtifactId(),

    <exportedPackage>jakarta.inject.*</exportedPackage>
    <exportedPackage>jakarta.annotation.*</exportedPackage>

    <!--
      | We may potentially want to export these, but right now I'm not sure that anything Guice specific needs
      | to be made available to plugin authors. If we find people are getting fancy and want to take advantage of

 * graph construction.
 * <p>
 * Extend this class {@code createXXX()} methods and override to customize, if needed. The contract of this class makes
 * sure that these (potentially overridden) methods are invoked only once, and instance created by those methods are
 * memorized and kept as long as supplier instance is kept open.
 * <p>

Following this checklist to help us incorporate your
contribution quickly and easily:

 - [ ] Make sure there is a [JIRA issue](https://issues.apache.org/jira/browse/MNG) filed
       for the change (usually before you start working on it).  Trivial changes like typos do not
       require a JIRA issue. Your pull request should address just this issue, without
       pulling in other changes.