*           (a module existing only in test output, not in main output) should be uncommon.</li>
     *     </ul>
     *   </li>
     *   <li>Otherwise (test output contains no module information), then:
     *     <ul>
     *       <li>If the main output is on the module-path, place the test output
     *           on a {@code --patch-module} option.</li>

    private static final String PARENT_MODULE = "module-parent";
    private static final String INDEPENDENT_MODULE = "module-independent";
    private static final String MODULE_A = "module-a";
    private static final String MODULE_B = "module-b";
    private static final String MODULE_C = "module-c";
    private static final String MODULE_D = "module-d";
    private static final String MODULE_C_1 = "module-c-1";

     */
    private static final String MODULE_INFO = "module-info.class";

    /**
     * The attribute for automatic module name in {@code META-INF/MANIFEST.MF} files.
     */
    private static final Attributes.Name AUTO_MODULE_NAME = new Attributes.Name("Automatic-Module-Name");

    /**
     * Module information for the path specified at construction time.

     */
    private static final String MODULE_INFO = "module-info.class";

    /**
     * The attribute for automatic module name in {@code META-INF/MANIFEST.MF} files.
     */
    private static final Attributes.Name AUTO_MODULE_NAME = new Attributes.Name("Automatic-Module-Name");

    /**
     * Module information for the path specified at construction time.

     *       then the test dependency will be placed on the Java {@code --patch-module} option instead of the
     *       {@code --module-path} option.</li>
     * </ul>
     */
    MODULES("--module-path"),

    /**
     * The path identified by the Java {@code --upgrade-module-path} option.
     */
    UPGRADE_MODULES("--upgrade-module-path"),

    /**

            }

            for (String module : parent.getModules()) {
                module = module.replace('\\', '/');

                if (module.regionMatches(true, module.length() - 4, ".xml", 0, 4)) {
                    module = module.substring(0, module.lastIndexOf('/') + 1);
                }

                String moduleName = module;
                if (moduleName.endsWith("/")) {

     *           (a module existing only in test output, not in main output) should be uncommon.</li>
     *     </ul>
     *   </li>
     *   <li>Otherwise (test output contains no module information), then:
     *     <ul>
     *       <li>If the main output is on the module-path, place the test output
     *           on a {@code --patch-module} option.</li>

            .java files in c.g.c.collect.Collect, a module that the c.g.c.base test module inherits,
            and .java files in c.g.c.collect.testModule, one that it doesn't[*]. Consequently,
            c.g.c.base.testModule transitively pulls in .java files from both modules while reading
            the module description of only the prod module. And the prod module doesn't inherit all
            the modules that the test module classes use, so we get errors.

    </pluginManagement>
  </build>
  <modules>
    <module>maven-core</module>
    <module>apache-maven</module>
    <module>maven-model</module>
    <module>maven-plugin-api</module>
    <module>maven-project</module>
    <module>maven-reporting-api</module>
    <module>maven-project-builder</module>
    <module>maven-mercury</module>
    <module>maven-embedder</module>
    <module>maven-toolchain</module>

    </pluginManagement>
  </build>
  <modules>
    <module>maven-core</module>
    <module>apache-maven</module>
    <module>maven-model</module>
    <module>maven-plugin-api</module>
    <module>maven-project</module>
    <module>maven-reporting-api</module>
    <module>maven-project-builder</module>
    <module>maven-mercury</module>
    <module>maven-embedder</module>
    <module>maven-toolchain</module>