*
 * @since 17.0
 */
@GwtCompatible
public final class Verify {
  /**
   * Ensures that {@code expression} is {@code true}, throwing a {@code VerifyException} with no
   * message otherwise.
   *
   * @throws VerifyException if {@code expression} is {@code false}
   * @see Preconditions#checkState Preconditions.checkState()
   */
  public static void verify(boolean expression) {
    if (!expression) {

     */
    public static boolean isPublicStaticFinal(final int modifier) {
        return isPublic(modifier) && isStatic(modifier) && isFinal(modifier);
    }

    /**
     * Checks if the specified modifier is public.
     *
     * @param modifier
     *            the modifier to check
     * @return true if public, false otherwise
     */

    /**
     * Checks if a previous page exists.
     * @return true if a previous page exists, false otherwise.
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether a previous page exists.
     * @param existPrePage true if a previous page exists, false otherwise.
     */
    public void setExistPrePage(final boolean existPrePage) {

     * @return t if not <code>null</code>, otherwise defaultValue
     */
    public static <T> T defaultValue(final T t, final T defaultValue) {
        return t == null ? defaultValue : t;
    }

    /**
     * Returns true if the two objects are not equal.
     *
     * @param o1 the first object
     * @param o2 the second object
     * @return true if not equal, false otherwise
     */

     */
    Class<?> getValueClassOfMap(int index);

    /**
     * Returns the element type if the return type of the method is a parameterized {@link Collection}.
     *
     * @return the element type if the return type of the method is a parameterized {@link Collection}, otherwise {@literal null}
     */

     * Checks if a previous page exists.
     *
     * @return true if previous page exists, false otherwise
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether a previous page exists.
     *
     * @param existPrePage true if previous page exists, false otherwise
     */
    public void setExistPrePage(final boolean existPrePage) {

    }

    /**
     * Checks if the log level is DEBUG.
     *
     * @return true if DEBUG, false otherwise
     */
    public boolean isDebugEnabled() {
        return DEBUG.equals(logLevel);
    }

    /**
     * Checks if the log level is INFO.
     *
     * @return true if INFO, false otherwise
     */
    public boolean isInfoEnabled() {
        return INFO.equals(logLevel);
    }

     *
     * @return the information if this property is parameterized, otherwise {@literal null}
     */
    ParameterizedClassDesc getParameterizedClassDesc();

    /**
     * Returns the element type if this property is a parameterized {@link Collection}.
     *
     * @return the element type if this property is a parameterized {@link Collection}, otherwise {@literal null}
     */
    Class<?> getElementClassOfCollection();

     *
     * @return true if a previous page exists, false otherwise
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets the flag indicating if a previous page exists.
     *
     * @param existPrePage true if a previous page exists, false otherwise
     */
    public void setExistPrePage(final boolean existPrePage) {

     *
     * @return true if a previous page exists, false otherwise
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets the flag indicating whether a previous page exists.
     *
     * @param existPrePage true if a previous page exists, false otherwise
     */
    public void setExistPrePage(final boolean existPrePage) {