- [ ] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
 - [ ] Run `mvn clean verify` to make sure basic checks pass. A more thorough check will
       be performed on your pull request automatically.
 - [ ] You have run the [Core IT][core-its] successfully.

If your pull request is about ~20 lines of code you don't need to sign an

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  future. Therefore, we should rename this file from pom.xml in the maven-core
  jarfile to pom-4.0.0.xml (and successive revisions to the base pom made to
  accommodate changes in the model will be named accordingly - 4.0.1, 4.0.2, ...).

Minimum Element-Set for a Project POM

  In order to furnish a basic set of information which we need to distinguish one

                    // on Windows, need a short path or we hit 256 character limit for paths
                    // using EXECUTOR_NUMBER guarantees that concurrent builds on same agent
                    // will not trample each other plus workaround for JENKINS-52657
                    dir(isUnix() ? 'test' : "c:\\mvn-it-${EXECUTOR_NUMBER}.tmp") {
                        def WORK_DIR=pwd()

  s/getMojoConfiguration()/getConfiguration()/g

  That should be all there is to it.

* MojoDescriptor

  Remove set/getMojoConfiguration(..), as it will become obsolete.

* MavenSession

  We may need to enable the context injection here, since this will be
  instantiated per-project. If we always inject the same context parameters,
  and are careful to inject nulls where things are missing, we should be

 We need to define what happens in the when things are not setup correctly

 o ~/.m2 directory does not exist
 o ~/.m2/maven.properties does not exist
 o if they once existed but now to do not exist

     2. append happens at plugin level first, then goal level, independently from phases.
        This means for example that adding pluginA:goal2 to pre-existing (pluginA:goal1, pluginB:goal) will lead to (pluginA:goal1, pluginA:goal2, pluginB:goal)

   * see effective POM as shown by {{{/plugins/maven-help-plugin/effective-pom-mojo.html}<<<help:effective-pom>>>}} to see the effective plugins then goals order.

                    // on Windows, need a short path or we hit 256 character limit for paths
                    // using EXECUTOR_NUMBER guarantees that concurrent builds on same agent
                    // will not trample each other plus workaround for JENKINS-52657
                    dir(isUnix() ? 'test' : "c:\\mvn-it-${EXECUTOR_NUMBER}.tmp") {
                        def WORK_DIR=pwd()
                        try {