Technically there are three variations of the method; we could float them upward but they are more probably more interesting to extract to another class who is responsible for converting FQCNs to filenames for the Standard Router.

As far as I am concerned this can either wait for a refactoring round or we can do it together with this PR.

I just noticed your merged it; though I am delighted that the PR got merged I am somewhat confused by the presence of an unresolved comment :)