questions re the ChainingMetadataProvider type

[Rod Widdowson]

> Everybody with > 1 metadata source is chaining. That's just mandatory to make the config work (which is not exactly true in the
SP, it can
> be implicit there).

Since this is dev: It can be implicit in the IdP if you have multiple provider files (which I guess is what you are saying) - and
_that_ is why the key is needed if you have multiple files...

For myself I would always specify the key, I had to dive into the documentation of Collctions.sort to see that it (currently,
remember Java has changed gears and is a potentially rapidly changing platform) guarantees stability..  There again I also over use
parentheses in boolean expressions when I'm writing C...

/R