def formatted_version
        stringified = @version.to_s
        return stringified unless stringified.length == 14
        stringified.insert(4, "_").insert(7, "_").insert(10, "_")
      end
def formatted_version
        stringified = @version.to_s
        return stringified unless stringified.length == 14
        stringified.insert(4, "_").insert(7, "_").insert(10, "_")
      end
turns 20170404131909 into "2017_04_04_131909"