in src/main/scala/com/googlesource/gerrit/plugins/support/GerritSupportCommands.scala [34:41]
  implicit def unwrapResultName(resultName: ResultName): String = resultName.value
  // allows returning a pure Json result or a textual file content
  case class CommandResult(entryName: ResultName, content: AnyResult)
  trait AnyResult {
    def getBytes: Array[Byte]
  }