[news.eclipse.modeling.gmf] Link Mapping Operation

[gabriele.boldrin@xxxxxxxxxxxx (gabriele )]

I have a connection with inside a String like source and target 
references. This values are the ID of the source and target objects. How 
can I create a Link Mapping?

Something like
 
<diagram>
 <node id="A">
 <node id="B">
 <link name="T">
    <source id="A"/>     (id type: String)
    <target id="B"/>     (id type: String) 
 </link>
<diagram>