anchor.diff:  --------------------------------------------------
   // TESTRESPONSE[s/"id" : "3M3zkw2GHMo2Y4h4\/KFKCg=="/"id": $body.indices.twitter.shards.0.0.commit.id/]
   // TESTRESPONSE[s/"translog_uuid" : "hnOG3xFcTDeoI_kvvvOdNA"/"translog_uuid": $body.indices.twitter.shards.0.0.commit.user_data.translog_uuid/]
  +// TESTRESPONSE[s/"sync_id" : "AVvFY-071siAOuFGEO9P"/"sync_id": $body.indices.twitter.shards.0.0.commit.user_data.sync_id/]
   // TESTRESPONSE[s/"1": \.\.\./"1": $body.indices.twitter.shards.1/]
   // TESTRESPONSE[s/"2": \.\.\./"2": $body.indices.twitter.shards.2/]
   // TESTRESPONSE[s/"3": \.\.\./"3": $body.indices.twitter.shards.3/]
  
positive.code: GET twitter/_stats?filter_path=**.commit&level=shards <1>
  --------------------------------------------------
  // CONSOLE
  // TEST[s/^/PUT twitter\n/]
  <1> `filter_path` is used to reduce the verbosity of the response, but is entirely optional
  
  
  
negative.code:                {
                   "commit" : {
                     "id" : "3M3zkw2GHMo2Y4h4/KFKCg==",
                     "generation" : 2,
                     "user_data" : {
                       "translog_uuid" : "hnOG3xFcTDeoI_kvvvOdNA",
                       "local_checkpoint" : "-1",
                       "translog_generation" : "1",
                       "max_seq_no" : "-1",
                       "sync_id" : "AVvFY-071siAOuFGEO9P", <1>
                       "max_unsafe_auto_id_timestamp" : "-1"
                     },
                     "num_docs" : 0
  