You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: rhsm_fact_importer.rb
    path of file: ./repos/foreman/app/services/katello
    
    the code of the file until where you have to start completion: module Katello
  class RhsmFactI
    
    def change_separator(facts)
      to_ret = {}
      facts.each do |key, value|
        to_ret[key.split('.').join(RhsmFactName::SEPARATOR)] = value
      end
      to_ret
    end