---
- job:
    name: elastic+elasticsearch+%BRANCH%+multijob+packaging-tests-upgrade
    display-name: "elastic / elasticsearch # %BRANCH% - packaging upgrade tests"
    description: "Testing of the Elasticsearch %BRANCH% branch packaging test upgrade support matrix.\n"
    project-type: matrix
    node: master
    scm:
      - git:
          wipe-workspace: false
    axes:
      - axis:
          type: label-expression
          name: os

 *   <li>{@link org.apache.maven.cling.invoker.mvnup.goals.Apply} - Applies upgrades to project files</li>
 *   <li>{@link org.apache.maven.cling.invoker.mvnup.goals.Help} - Displays usage information</li>
 * </ul>
 *
 * <h3>Upgrade Strategies</h3>
 * <p>The tool uses a strategy pattern to handle different types of upgrades:</p>
 * <ul>

---
- job:
    name: "elastic+elasticsearch+pull-request+packaging-upgrade-tests"
    display-name: "elastic / elasticsearch - pull request packaging-upgrade-tests"
    description: "Testing of Elasticsearch pull requests - packaging-upgrade-tests"
    project-type: matrix
    node: master
    child-workspace: "/dev/shm/elastic+elasticsearch+pull-request+packaging-upgrade-tests"
    scm:
      - git:

        context.info("Maven Upgrade Tool - Help");
        context.println();
        context.info("Upgrades Maven projects to be compatible with Maven 4.");
        context.println();
        context.info("Available goals:");
        context.indent();
        context.info("help  - display this help message");
        context.info("check - check for available upgrades");

     */
    @Nonnull
    Optional<Boolean> plugins();

    /**
     * Should apply all upgrade options (equivalent to --model-version 4.1.0 --infer --model --plugins).
     * This is a convenience option that combines model upgrade, inference, compatibility fixes, and plugin upgrades.
     *
     * @return an {@link Optional} containing the boolean value {@code true} if specified, or empty
     */
    @Nonnull

        printStream.accept("Goals:");
        printStream.accept("  help  - display this help message");
        printStream.accept("  check - check for available upgrades");
        printStream.accept("  apply - apply available upgrades");
        printStream.accept("");
        printStream.accept("Options:");
        printStream.accept("  -m, --model-version <version> Target POM model version (4.0.0 or 4.1.0)");

                || MODEL_VERSION_4_2_0.equals(modelVersion);
    }

    /**
     * Checks if an upgrade from one version to another is possible.
     *
     * @param fromVersion the source version
     * @param toVersion the target version
     * @return true if the upgrade is possible
     */
    public static boolean canUpgrade(String fromVersion, String toVersion) {

* `upgrade`: Upgrades

      }

      val isUpgradeResponse =
        isUpgradeCode &&
          "upgrade".equals(response.header("Connection"), ignoreCase = true)

      response =
        when {
          // This is an HTTP/1 upgrade. (This case includes web socket upgrades.)
          isUpgradeRequest && isUpgradeResponse -> {
            response
              .newBuilder()
              .body(

    coders call this and we don't want their users to suffer.


## Version 4.0.0

_2019-06-26_

**This release upgrades OkHttp to Kotlin.** We tried our best to make fast and safe to upgrade
from OkHttp 3.x. We wrote an [upgrade guide][upgrading_to_okhttp_4] to help with the migration and a
[blog post][okhttp4_blog_post] to explain it.

 *  Fix: Target Java 8 bytecode for Java and Kotlin.