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{
  "apiKey": 24,
  "type": "request",
  "name": "AddPartitionsToTxnRequest",
  // Version 1 is the same as version 0.
  // 
  // Version 2 adds the blocking behavior and consumer group id.
  "validVersions": "0-2",
  "flexibleVersions": "none",
  "fields": [
    { "name": "TransactionalId", "type": "string", "versions": "0+", "entityType": "transactionalId",
      "about": "The transactional id corresponding to the transaction."},
    { "name": "ProducerId", "type": "int64", "versions": "0+", "entityType": "producerId",
      "about": "Current producer id in use by the transactional id." },
    { "name": "ProducerEpoch", "type": "int16", "versions": "0+",
      "about": "Current epoch associated with the producer id." },
	// -------------- START NEW FIELD -------------- 
    { "name": "GroupId", "type": "string", "versions": "2+", "entityType": "groupId", "nullableVersions": "2+", "default": "null",
      "about": "The unique group identifier." }
	// -------------- END NEW FIELD ----------------
    { "name": "Topics", "type": "[]AddPartitionsToTxnTopic", "versions": "0+",
      "about": "The partitions to add to the transaction.", "fields": [
      { "name": "Name", "type": "string", "versions": "0+", "mapKey": true, "entityType": "topicName",
        "about": "The name of the topic." },
      { "name": "Partitions", "type": "[]int32", "versions": "0+",
        "about": "The partition indexes to add to the transaction" }
    ]}
  ]
}

{
  "apiKey": 26,
  "type": "request",
  "name": "EndTxnRequest",
  // Version 1 is the same as version 0.
  // 
  // Version 2 adds the support for new PRODUCER_FENCED error code.
  //
  // Version 3 
  "validVersions": "0-3",
  "flexibleVersions": "none",
  "fields": [
    { "name": "TransactionalId", "type": "string", "versions": "0+", "entityType": "transactionalId",
      "about": "The ID of the transaction to end." },
    { "name": "ProducerId", "type": "int64", "versions": "0+", "entityType": "producerId",
      "about": "The producer ID." },
    { "name": "ProducerEpoch", "type": "int16", "versions": "0+",
      "about": "The current epoch associated with the producer." },
    { "name": "Committed", "type": "bool", "versions": "0+",
      "about": "True if the transaction was committed, false if it was aborted." },
	// -------------- START NEW FIELD -------------- 
	{ "name": "Topics", "type": "[]EndTxnTopic", "versions": "3+",
      "about": "The partitions ending up writing in current transaction.", "fields": [
      { "name": "Name", "type": "string", "versions": "0+", "mapKey": true, "entityType": "topicName",
        "about": "The name of the topic." },
      { "name": "Partitions", "type": "[]int32", "versions": "3+",
        "about": "The partition indexes to add to the transaction" }
    ]}
	// -------------- END NEW FIELD -------------- --
  ]
}