/// <summary>
/// Removes a page with the specified index.
/// </summary>
/// <param name="index">The zero-based index of page to remove.</param>
public void RemovePage(int index)
{
preparedPages[index].Dispose();
preparedPages.RemoveAt(index);
pageCache.Clear();
}
internal void ApplyWatermark(Watermark watermark)
{
SourcePages.ApplyWatermark(watermark);
FPageCache.Clear();
}