public static final int DEFAULT_PAGE_SIZE = 20;

    /** Default current page number. */
    public static final int DEFAULT_CURRENT_PAGE_NUMBER = 1;

    /**
     * The total number of records available.
     */
    private int allRecordCount;

    /**
     * The total number of pages available.
     */
    private int allPageCount;

    /**
     * Whether a previous page exists.

          F extends @Nullable Object, T extends @Nullable Object>
      extends AbstractSequentialList<T> implements Serializable {
    final List<F> fromList;
    final Function<? super F, ? extends T> function;

    TransformingSequentialList(List<F> fromList, Function<? super F, ? extends T> function) {
      this.fromList = checkNotNull(fromList);
      this.function = checkNotNull(function);
    }

    /**

    }

    /**
     * Returns the default current page number.
     *
     * @return The default current page number.
     */
    protected int getDefaultCurrentPageNumber() {
        return DEFAULT_CURRENT_PAGE_NUMBER;
    }

    /**
     * Returns the total number of records.
     *
     * @return The total number of records.
     */
    public int getAllRecordCount() {

  }

  public void testPeekingIteratorBehavesLikeIteratorOnSingletonIterable() {
    actsLikeIteratorHelper(singletonList(new Object()));
  }

  // TODO(cpovirk): instead of skipping, use a smaller number of steps
  @GwtIncompatible // works but takes 5 minutes to run
  public void testPeekingIteratorBehavesLikeIteratorOnThreeElementIterable() {
    actsLikeIteratorHelper(Lists.newArrayList("A", "B", "C"));
  }

        this.currentPageNumber = currentPageNumber;
    }

    /**
     * Get the page number list.
     * @return The page number list.
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Set the page number list.
     * @param pageNumberList The page number list.
     */
    public void setPageNumberList(final List<Integer> pageNumberList) {

    }

    /**
     * Gets the page number list.
     *
     * @return the page number list
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the page number list.
     *
     * @param pageNumberList the page number list
     */
    public void setPageNumberList(final List<Integer> pageNumberList) {

     */
    public static final int DEFAULT_PAGE_SIZE = 20;

    /**
     * Default current page number.
     */
    public static final int DEFAULT_CURRENT_PAGE_NUMBER = 1;

    /**
     * Total number of records.
     */
    private int allRecordCount;

    /**
     * Total number of pages.
     */
    private int allPageCount;

    /**
     * Flag indicating if a previous page exists.

    private static final long serialVersionUID = 1L;

    /**
     * Default number of records to display per page.
     */
    public static final int DEFAULT_PAGE_SIZE = 20;

    /**
     * Default current page number for pagination.
     */
    public static final int DEFAULT_CURRENT_PAGE_NUMBER = 1;

    /**
     * The total number of records in the result set.
     */
    private int allRecordCount;

    /**

    }

    /**
     * Sets the number of records to display per page.
     *
     * @param pageSize the page size to set
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

    /**
     * Gets the current page number (1-based).
     * If the current page number is not set or is invalid (≤0), returns the default page number.
     *

    }

    /**
     * Sets the number of records to display per page.
     *
     * @param pageSize the page size
     */
    public void setPageSize(final int pageSize) {
        this.pageSize = pageSize;
    }

    /**
     * Gets the current page number being displayed.
     * If the current page number is not set or is invalid, returns the default page number.
     *
     * @return the current page number