Does a Finder interface needs an implementation class

[Diogo Luzzardi de Carvalho]

Hi,

I'm migrating from warp-persist to guice-persist and I'm experiencing a problem with my old Accessors. 

I add them using addFinder method from JpaPersistModule but when I start my project guice complains that there is no implementation for my Finder class.

Can anyone confirm if it is needed a implementation class or if I did something wrong in the configuration?

best regards