Gets and sets the property DefaultAvailabilityZone. 
            
            The stack's default Availability Zone, which must be in the specified region. For
            more information, see  Regions
            and Endpoints.         If you also specify a value for  CopyC#,
            the subnet must be in the same zone.         For more information, see CreateStack.
CopyC#,
            the subnet must be in the same zone.         For more information, see CreateStack.
             
            DefaultSubnetId
 Declaration Syntax
 Declaration Syntax| C# | 
public string DefaultAvailabilityZone { get; set; }