public boolean isExistNextPage() {
        return existNextPage;
    }

    /**
     * Set if the next page exists.
     * @param existNextPage true if the next page exists.
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Get the page size.
     * @return The page size.
     */
    public int getPageSize() {

        return existNextPage;
    }

    /**
     * Sets whether next page exists.
     *
     * @param existNextPage true if next page exists
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the page size.
     *
     * @return the page size
     */
    public int getPageSize() {

        return existNextPage;
    }

    /**
     * Sets whether a next page exists.
     * @param existNextPage true if a next page exists, false otherwise.
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the page size.
     * @return The page size.
     */
    public int getPageSize() {

        return existNextPage;
    }

    /**
     * Sets the flag for the existence of a next page.
     *
     * @param existNextPage true if a next page exists.
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the page size.
     *
     * @return The page size.
     */
    public int getPageSize() {

        return existNextPage;
    }

    /**
     * Sets whether there is a next page available.
     *
     * @param existNextPage true if there is a next page, false otherwise
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records to display per page.

        return existNextPage;
    }

    /**
     * Sets whether a next page exists.
     *
     * @param existNextPage true if a next page exists, false otherwise
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records to display per page.

        return existNextPage;
    }

    /**
     * Sets whether a next page exists.
     *
     * @param existNextPage true if a next page exists, false otherwise
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of items per page.

        this.allPageCount = allPageCount;
    }

    /**
     * Sets whether a next page exists.
     *
     * @param existNextPage true if a next page exists
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Sets whether a previous page exists.
     *
     * @param existPrevPage true if a previous page exists

    }

    /**
     * Sets whether a next page exists after the current page.
     *
     * @param existNextPage true if a next page exists, false otherwise
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records to display per page.

        return existNextPage;
    }

    /**
     * Sets whether a next page exists.
     *
     * @param existNextPage true if a next page exists, false otherwise
     */
    public void setExistNextPage(final boolean existNextPage) {
        this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records per page.
     * If not set or invalid, returns the default page size.
     *