*
     * @return an {@link Optional} containing the list of project names to build, or empty if not specified
     */
    @Nonnull
    Optional<List<String>> projects();

    /**
     * Indicates whether Maven should also build the specified projects' dependencies.
     *

            "The system cannot find the path specified.", "The specified path is invalid.",
            "The process cannot access the file because it is being used by another process.", "Access is denied.",
            "There are currently no logon servers available to service the logon request.", "The specified user already exists.",
            "The specified user does not exist.", "The specified network password is not correct.",

     *
     * @param <KEY> the key type of the <code>Map</code>
     * @param <VALUE> the value type of the <code>Map</code>
     * @param key the key to be added to the <code>Map</code>
     * @param value the value to be added to the <code>Map</code>
     * @return a {@literal Maps} for constructing a {@link Map} with the specified key and value
     */

 * <ul>
 *   <li>{@link #SuggestSettingsException(String)}: Constructs a new exception with the specified detail message.</li>
 *   <li>{@link #SuggestSettingsException(Throwable)}: Constructs a new exception with the specified cause.</li>
 *   <li>{@link #SuggestSettingsException(String, Throwable)}: Constructs a new exception with the specified detail message and cause.</li>
 * </ul>
 *
 * @see RuntimeException
 */

    /**
     * Returns true if this set contains the specified element.
     *
     * @param o
     *            element whose presence in this set is to be tested.
     * @return true if this set contains the specified element.
     */
    @Override
    public boolean contains(final Object o) {
        return map.containsKey(o);
    }

    /**
     * Adds the specified element to this set if it is not already present.
     *

  }

  /**
   * Inserts the specified element into this priority queue.
   *
   * @param e the element to add
   * @return {@code true} (as specified by {@link Queue#offer})
   * @throws ClassCastException if the specified element cannot be compared with elements currently
   *     in the priority queue according to the priority queue's ordering
   * @throws NullPointerException if the specified element is null
   */

            "The filename, directory name, or volume label syntax is incorrect.", "The system cannot find the file specified.",
            "Cannot create a file when that file already exists.", "The handle is invalid.", "The specified path is invalid.",
            "The system cannot find the path specified.", "The specified path is invalid.",

        return deleteDocumentByQuery(searchEngineClient, fessConfig.getIndexDocumentUpdateIndex(), queryBuilder);
    }

    /**
     * Deletes all documents that match the specified query from the specified index.
     *
     * @param searchEngineClient the search engine client to use for deletion
     * @param index the index name to delete documents from

     * Checks if the specified modifier is public, static, and final.
     *
     * @param modifier
     *            the modifier to check
     * @return true if public, static, and final, false otherwise
     */
    public static boolean isPublicStaticFinal(final int modifier) {
        return isPublic(modifier) && isStatic(modifier) && isFinal(modifier);
    }

    /**
     * Checks if the specified modifier is public.
     *

     * @return an {@link Optional} containing the list of goals, or empty if not specified
     */
    @Nonnull
    Optional<List<String>> goals();

    /**
     * Returns the target POM model version for upgrades.
     * Supported values include "4.0.0" and "4.1.0".
     *
     * @return an {@link Optional} containing the model version, or empty if not specified
     */
    @Nonnull
    Optional<String> modelVersion();

    /**