/**
 * A class that holds a value.
 *
 * @author koichik
 * @param <T>
 *            The type of the value
 */
public class ValueHolder<T> {

    /** The value */
    protected T value;

    /**
     * Constructs an instance.
     */
    public ValueHolder() {
    }

    /**
     * Constructs an instance.
     *
     * @param value
     *            The value
     */

        }
    }

    /**
     * Reads the contents of the file channel into a byte buffer.
     *
     * @param channel
     *            The file channel. Must not be {@literal null}.
     * @param buffer
     *            The byte buffer. Must not be {@literal null}.
     * @param position
     *            The position to start reading from.
     * @return The number of bytes read.
     */

   * the given character set. Malformed input and unmappable characters will be replaced.
   *
   * @param reader input source
   * @param charset character set used for encoding chars to bytes
   * @param bufferSize size of internal input and output buffers
   * @throws IllegalArgumentException if bufferSize is non-positive
   */

     */
    private final Class<?>[] argTypes;

    /**
     * Creates a {@link NoSuchConstructorRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param argTypes
     *            Array of parameter types
     * @param cause
     *            The cause of the exception
     */

 */
public interface Converter {

    /**
     * Returns the value as a string.
     *
     * @param value
     *            the value
     * @return the value as a string
     */
    String getAsString(Object value);

    /**
     * Returns the value as an object.
     *
     * @param value
     *            the value
     * @return the value as an object
     */
    Object getAsObject(String value);

   * {@code size}. An element index may range from zero, inclusive, to {@code size}, exclusive.
   *
   * @param index a user-supplied index identifying an element of an array, list or string
   * @param size the size of that array, list or string
   * @param desc the text to use to describe this index in an error message
   * @return the value of {@code index}

     *
     * @param role the message role
     * @param content the message content
     */
    public ChatMessage(final String role, final String content) {
        this();
        this.role = role;
        this.content = content;
    }

    /**
     * Creates a user message with the specified content.
     *
     * @param content the message content
     * @return a new user message

   * current count is not {@code oldCount}, no change is made.
   *
   * @param element the element to conditionally set the count of; may be null only if explicitly
   *     allowed by the implementation
   * @param oldCount the expected present count of the element in this multiset
   * @param newCount the desired count of the element in this multiset

    /**
     * Builds parameter maps for search initialization, creating both query strings
     * and form inputs for the given parameters.
     *
     * @param paramMap the parameter map to process
     * @param queryKey the key for storing query string parameters
     * @param formKey the key for storing form input parameters
     */

    public HtmlResponse back() {
        saveToken();
        return asHtml(path_AdminDesign_AdminDesignJsp).useForm(DesignForm.class);
    }

    /**
     * Upload a design file.
     * @param form The upload form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse upload(final UploadForm form) {