tensorflow/core/ops/compat/ops_history_v1/ReaderReadV2.pbtxt

op {
  name: "ReaderReadV2"
  input_arg {
    name: "reader_handle"
    type: DT_RESOURCE
  }
  input_arg {
    name: "queue_handle"
    type: DT_RESOURCE
  }
  output_arg {
    name: "key"
    type: DT_STRING
  }
  output_arg {
    name: "value"
    type: DT_STRING
  }
  is_stateful: true
}