//////////////////////////////////////////////////////////////////////
 /// <summary>Adds a new attribute of type shipping.</summary>
 /// <param name="name">attribute name</param>
 /// <param name="value">attribute value</param>
 /// <returns>the newly-created GBaseAttribute object</returns>
 //////////////////////////////////////////////////////////////////////
 public GBaseAttribute AddShippingAttribute(string name, Shipping value)
 {
     return(Add(value.CreateGBaseAttribute(name)));
 }
 //////////////////////////////////////////////////////////////////////
 /// <summary>Adds a new attribute of type shipping.</summary>
 /// <param name="name">attribute name</param>
 /// <param name="value">attribute value</param>
 /// <returns>the newly-created GBaseAttribute object</returns>
 //////////////////////////////////////////////////////////////////////
 public GBaseAttribute AddShippingAttribute(string name, Shipping value)
 {
     return Add(value.CreateGBaseAttribute(name));
 }