[Authentication] Small API issues

[Stef Walter]

Guillaume Martres wrote:
> - Service.SearchCollections, Collection.CreateItem and Collection.SearchItems 
> have a "fields" argument, but if I'm not mistaken, everywhere else it is 
> refered to as the "attributes" of the items.

Yup, goood point. Do we want 'fields' or 'attributes'.

> - Service.SearchCollections could also be renamed to SearchItems since that's 
> what it outputs.

I was kind of trying to get across the point that it searches all
collections, but you're probably right.

Cheers,

Stef