* Node for the implemented interfaces, if there is one, for location info,
* therwise will use the definition for location info
*/
private DuplicateInterfaceProblem duplicateInterfaceProblem(IReference interfRef, int idx)
{
IASNode node = getInterfaceNode(idx);
if (node != null)
return new DuplicateInterfaceProblem(node, getBaseName(), interfRef.getDisplayString());
else
return new DuplicateInterfaceProblem(this, getBaseName(), interfRef.getDisplayString());
}