path: "tensorflow.train.ServerDef"
tf_proto {
  descriptor {
    name: "ServerDef"
    field {
      name: "cluster"
      number: 1
      label: LABEL_OPTIONAL
      type: TYPE_MESSAGE
      type_name: ".tensorflow.ClusterDef"
    }
    field {
      name: "job_name"
      number: 2
      label: LABEL_OPTIONAL
      type: TYPE_STRING
    }
    field {
      name: "task_index"
      number: 3
      label: LABEL_OPTIONAL
      type: TYPE_INT32
    }
    field {
      name: "default_session_config"
      number: 4
      label: LABEL_OPTIONAL
      type: TYPE_MESSAGE
      type_name: ".tensorflow.ConfigProto"
    }
    field {
      name: "protocol"
      number: 5
      label: LABEL_OPTIONAL
      type: TYPE_STRING
    }
  }
}