def replace_engines_with_cache_results
      @cache_results.each do |key, value|
        engine = @cache_key_to_engine[key]
        builder = @engine_to_builder[engine]
        builder.replace_engine(engine, value) if value
      end
    end
def replace_engines_with_cache_results
      @cache_results.each do |key, value|
        engine = @cache_key_to_engine[key]
        builder = @engine_to_builder[engine]
        builder.replace_engine(engine, value) if value
      end
    end
Maps the results from the cache back to the builders