The MIME example is a basic request-response client-service example, using a MIME binding. It includes two operations, AddDocument to send an explicitly-referenced MIME attachment, and GetDocuments to return a list of links to unreferenced MIME attachments (Generate Code and Manipulate the Attachment). The latter illustrates the use of the schema type swaRef defined by the WS-I Attachments Profile 1.0 providing an interoperable way to identify a message attachment.