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{
  "apiKey": TBD,
  "type": "response",
  "name": "DescribeMirrorsResponse",
  // Version 0 is the initial version.
  "validVersions": "0",
  "flexibleVersions": "0+",
  "fields": [
    { "name": "ThrottleTimeMs", "type": "int32", "versions": "0+",
      "about": "The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota." },
    { "name": "ErrorCode", "type": "int16", "versions": "0+",
      "about": "The error code, or 0 if there was no error." },
    { "name": "ErrorMessage", "type": "string", "versions": "0+", "nullableVersions": "0+", "default": "null",
      "about": "The top-level error message, or null if there was no error." },
    { "name": "Mirrors", "type": "[]DescribedMirror", "versions": "0+",
      "about": "Each described mirror.", "fields": [
      { "name": "ErrorCode", "type": "int16", "versions": "0+",
        "about": "The error code, or 0 if there was no error." },
      { "name": "MirrorName", "type": "string", "versions": "0+", "entityType": "mirrorName",
        "about": "The cluster mirror name." },
      { "name": "AuthorizedOperations", "type": "int32", "versions": "0+", "default": "-2147483648",
        "about": "32-bit bitfield to represent authorized operations for this mirror." },
      { "name": "Topics", "type": "[]TopicPartitions", "versions": "0+",
        "about": "Each topic in the mirror.", "fields": [
        { "name": "TopicName", "type": "string", "versions": "0+",
          "about": "The topic name." },
        { "name": "Partitions", "type": "[]PartitionDetail", "versions": "0+",
          "about": "Each partition detail.", "fields": [
          { "name": "PartitionIndex", "type": "int32", "versions": "0+",
            "about": "The partition index." },
          { "name": "SourceOffset", "type": "int64", "versions": "0+", "default": "-1",
            "about": "The high watermark offset from the source cluster leader, or -1 if not yet available." },
          { "name": "DestinationOffset", "type": "int64", "versions": "0+", "default": "-1",
            "about": "The log end offset on the destination cluster, or -1 if not yet available." },
          { "name": "Lag", "type": "int64", "versions": "0+", "default": "-1",
            "about": "The lag (source offset - destination offset), or -1 if not yet available." },
          { "name": "State", "type": "string", "versions": "0+",
            "about": "The partition state." },
          { "name": "", "type": "int32", "versions": "0+", "default": "-1",
            "about": "The last mirror leader epoch, or -1 if not available." } 
        ]}
      ]}
    ]}
  ]
}