anchor.diff:  --------------------------------------------------
   // TESTRESPONSE[s/"successful" : 2/"successful" : 1/]
   
  -The `_shards` header provides information about the replication process of the index operation.
  -
  -* `total` - Indicates to how many shard copies (primary and replica shards) the index operation should be executed on.
  -* `successful`- Indicates the number of shard copies the index operation succeeded on.
  -* `failed` - An array that contains replication related errors in the case an index operation failed on a replica shard.
  +The `_shards` header provides information about the replication process of the index operation:
  +
  +`total`:: Indicates how many shard copies (primary and replica shards) the index operation should be executed on.
  +`successful`:: Indicates the number of shard copies the index operation succeeded on.
  +`failed`:: An array that contains replication-related errors in the case an index operation failed on a replica shard.
   
   The index operation is successful in the case `successful` is at least 1.
   
  
positive.code: [[index-noop]]
  === Noop Updates
  
  When updating a document using the index api a new version of the document is
  always created even if the document hasn't changed. If this isn't acceptable
  use the `_update` api with `detect_noop` set to true. This option isn't
  available on the index api because the index api doesn't fetch the old source
  and isn't able to compare it against the new source.
  
  There isn't a hard and fast rule about when noop updates aren't acceptable.
  It's a combination of lots of factors like how frequently your data source
  sends updates that are actually noops and how many queries per second
  Elasticsearch runs on the shard with receiving the updates.
  
  [float]
  [[timeout]]
  
negative.code: // CONSOLE
  // TEST[continued]
  
  *NOTE:* Versioning is completely real time, and is not affected by the
  near real time aspects of search operations. If no version is provided,
  then the operation is executed without any version checks.
  
  