/// <summary>
 /// Generates the text for a PrecedingUnboundFrame builder.
 /// </summary>
 /// <param name="item">The item to generate the text for.</param>
 protected internal override void VisitPrecedingUnboundFrame(PrecedingUnboundFrame item)
 {
     visitUnboundFrame(item);
     writer.Write(" PRECEDING");
 }
 /// <summary>
 /// Visits a PrecedingUnboundFrame builder.
 /// </summary>
 /// <param name="item">The item to visit.</param>
 protected internal virtual void VisitPrecedingUnboundFrame(PrecedingUnboundFrame item)
 {
 }