"Transfer listener is registered before test");
        wagonManager.getArtifact(artifact, repo, transferListener, false);
        assertFalse(
                wagon.getTransferEventSupport().hasTransferListener(transferListener),
                "Transfer listener still registered after getArtifact");

        /* putArtifact */

    /**
     * Register the given listener which will receive all events.
     *
     * @param listener the listener to register
     * @throws NullPointerException if {@code listener} is null
     */
    void registerListener(@Nonnull Listener listener);

    /**
     * Unregisters a previously registered listener.
     *
     * @param listener the listener to unregister

    checkArgument(type != implementation, "Don't register %s to itself!", type);
    checkArgument(
        !DEFAULTS.containsKey(type), "A default value was already registered for %s", type);
    checkArgument(
        implementations.put(type, implementation) == null,
        "Implementation for %s was already registered",
        type);
  }

  static {

    checkArgument(type != implementation, "Don't register %s to itself!", type);
    checkArgument(
        !DEFAULTS.containsKey(type), "A default value was already registered for %s", type);
    checkArgument(
        implementations.put(type, implementation) == null,
        "Implementation for %s was already registered",
        type);
  }

  static {

   * difficult to reproduce because they depend on timing. For example:
   *
   * <ul>
   *   <li>When a {@code ListenableFuture} listener is registered to run under {@code
   *       directExecutor}, the listener can execute in any of three possible threads:
   *       <ol>
   *         <li>When a thread attaches a listener to a {@code ListenableFuture} that's already

    /** The key of the message: Create again */
    public static final String LABELS_wizard_button_register_again = "{labels.wizard_button_register_again}";

    /** The key of the message: Create and Next */
    public static final String LABELS_wizard_button_register_next = "{labels.wizard_button_register_next}";

    /** The key of the message: Start Crawling */

    /** The key of the configuration. e.g. businessCategory */
    String LDAP_ATTR_BUSINESS_CATEGORY = "ldap.attr.businessCategory";

    /** The key of the configuration. e.g. registeredAddress */
    String LDAP_ATTR_REGISTERED_ADDRESS = "ldap.attr.registeredAddress";

    /** The key of the configuration. e.g. displayName */
    String LDAP_ATTR_DISPLAY_NAME = "ldap.attr.displayName";

                pluginArtifactsCache.put(cacheKey, e);
                pluginArtifactsCache.register(project, cacheKey, recordArtifacts);
                throw new PluginManagerException(plugin, e.getMessage(), e);
            }
        }
        pluginArtifactsCache.register(project, cacheKey, recordArtifacts);

        // create and cache extensions realms

    }

    private void applyConventions(Project project, TaskContainer tasks, ObjectFactory objects, ProjectLayout layout, GradleDocumentationExtension extension) {

        TaskProvider<Sync> stageDocs = tasks.register("stageDocs", Sync.class, task -> {
            // release notes goes in the root of the docs
            task.from(extension.getReleaseNotes().getRenderedDocumentation());

            // DSL reference goes into dsl/

    manifest.getMainAttributes().put(Attributes.Name.CLASS_PATH, jarFile.getName());

    Closer closer = Closer.create();
    try {
      FileOutputStream fileOut = closer.register(new FileOutputStream(jarFile));
      JarOutputStream jarOut = closer.register(new JarOutputStream(fileOut, manifest));
      for (String entry : entries) {
        jarOut.putNextEntry(new ZipEntry(entry));