Specifies the type of load balancer. If the Scheme is internet-facing, the load balancer has a publicly resolvable DNS name
            that resolves to public IP addresses. If the Scheme is internal, the load balancer has a publicly resolvable DNS name that
            resolves to private IP addresses. This option is only available for load balancers attached to an Amazon VPC.
             
            
 Declaration Syntax
 Declaration Syntax| C# | 
public string Scheme { get; set; }