Gets and sets the property Quantity. The number of different headers that you want
            CloudFront to forward to the origin and to vary     on for this cache behavior. The
            maximum number of headers that you can specify by name is 10.     If you want CloudFront
            to forward all headers to the origin and vary on all of them, specify 1     for Quantity
            and * for Name. If you don't want CloudFront to forward any additional headers to
                the origin or to vary on any headers, specify 0 for Quantity and omit Items.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public int Quantity { get; set; }