Decryption config

[Rod Widdowson]

>> The entityID looks like a String bean, but that class takes a
>> Set<String> there.  Does Spring auto-magically convert single values
>> into singleton Collections?
> 
> As far as I can tell, it does, yes. I've not been consistent doing it but
> it seems to work.
> 

FYI I've used the code equivalent of this reasonably widely in the custom parsers where it cuts down on noise quite significantly.

/r
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