// Verify correct behavior for reactor parent:
            // - groupId should be removed (child has no explicit groupId, parent is in reactor)
            // - artifactId should be removed (can be inferred from relativePath)
            // - version should be removed (child has no explicit version, parent is in reactor)
            assertNull(parentElement.child("groupId").orElse(null));

         *
         * @param step The build step to process
         */
        private void processStep(BuildStep step) {
            // 1. Apply reactor failure behavior to decide whether to schedule or skip
            ReactorBuildStatus status = reactorContext.getReactorBuildStatus();
            boolean isAfterStep = step.name.startsWith(AFTER);

                        .expectResult(MavenExecutionException.class, "empty reactor"),
                scenario("Excluded aggregator, but selected child")
                        .activeRequiredProjects(MODULE_C_1)
                        .inactiveRequiredProjects(MODULE_C)
                        .expectResult(MavenExecutionException.class, "empty reactor"),

              <bomDescription>Bill Of Materials for Apache Maven - Maven JARS only</bomDescription>
              <outputFilename>maven-skinny-bom.xml</outputFilename>
              <reactorDependencies>REACTOR</reactorDependencies>
              <transitiveDependencies>NONE</transitiveDependencies>
              <usePropertiesForVersion>true</usePropertiesForVersion>
              <attach>true</attach>
            </configuration>

/**
 * An implementation of a workspace reader that knows how to search the Maven reactor for artifacts, either as packaged
 * jar if it has been built, or only compile output directory if packaging hasn't happened yet.
 *
 */
@Named(ReactorReader.HINT)
@SessionScoped
class ReactorReader implements MavenWorkspaceReader {
    public static final String HINT = "reactor";

    public static final String PROJECT_LOCAL_REPO = "project-local-repo";

        hasChanges |= trimParentElementLimited(context, root, parentElement);

        // Only remove parent elements if the parent is in the same reactor (not external)
        if (isParentInReactor(parentElement, pomMap, context)) {
            // Remove parent groupId if child has no explicit groupId
            if (childGroupId == null) {

     */
    @Nonnull
    default String getId() {
        return getModel().getId();
    }

    /**
     * Returns a boolean indicating if the project is the top level project for
     * this reactor build.  The top level project may be different from the
     * {@code rootDirectory}, especially if a subtree of the project is being
     * built, either because Maven has been launched in a subdirectory or using

     *   where multiple modules in the reactor have the same artifactId.
     * <p>
     * {@code -rf :artifactId} will pick up the first module which matches, but when multiple modules in the reactor
     *   have the same artifactId, effective failed module might be later in build reactor.

                    throw new ProjectBuildingException(
                            null,
                            "The projects in the reactor contain a cyclic reference: " + cycle.getMessage(),
                            null,
                            cde);
                }

                throw new ProjectBuildingException(results);
            }

* `refactor`: Refactors
    * This is normally for changes to the internal code that don't change the behavior. Normally it improves maintainability, or enables future features, etc.
* `upgrade`: Upgrades