/// <summary>
/// Removes an annotation from the document.
/// </summary>
public void Remove(PDFAnnotation annotation)
{
if (annotation.Owner != Owner)
{
throw new InvalidOperationException("The annotation does not belong to this document.");
}
Owner.Internals.RemoveObject(annotation);
Elements.Remove(annotation.Reference);
}
/// <summary>
/// Adds the specified annotation.
/// </summary>
/// <param name="annotation">The annotation.</param>
public void Add(PDFAnnotation annotation)
{
annotation.Document = Owner;
Owner.IrefTable.Add(annotation);
Elements.Add(annotation.Reference);
}