See Also: ServiceDescriptionFormatExtension Members
In a derived class, the ServiceDescriptionFormatExtension class allows users to define extensibility elements in addition to those defined in the Web Services Description Language (WSDL) specification. Extensibility elements can be added to a System.Web.Services.Description.ServiceDescription at any of several levels within the class hierarchy. Thus many classes derived from the System.Web.Services.Description.DocumentableItem class (including the System.Web.Services.Description.ServiceDescription class) have an Extensions property, which returns a System.Web.Services.Description.ServiceDescriptionFormatExtensionCollection.