Writes the attribute extensions to the specified writer.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
Attribute extensions are custom attributes that are not defined by the Atom 1.0 or RSS 2.0 specifications. They are serialized as an attribute of the <category> element. This method is an extension point that allows you to handle the serialization of custom attribute extensions. To do this, derive a class from SyndicationCategory and override this method. This method is called for all unrecognized attribute extensions.