Configuring <md:EntityDescriptor> ID attribute

[Peter Schober]

* Ian Young <ian at iay.org.uk> [2013-02-04 12:15]:
> Well, the failings of tools in general in the area of XML IDs are
> unfortunately legion (and that has had security consequences).
> Having said which, I suggest you try it in a current version of
> oXygen; I just did and it said:
> 
> 	E [Xerces] cvc-id.2: There are multiple occurrences of ID value 'wobble'.

My bad. I misread what you said above and all of the aforementioned
tools fail when ID values are duplicated,
-peter