Missing methods in Facets?

Does anyone know why a lot of the String methods that are supposedly in
Facets would not show up? Specifically, I was expecting fold, dresner,
similarity and soundex to be there, but for some reason they don’t seem
to be! I’ve attached a couple of screen shots of what I see. I have
installed the Facets-2.0.2 gem. Thanks in advance…

Cheers,

Martin