anchor.diff:  
   [source,js]
   --------------------------------------------------
  -GET twitter/_source/1/?_source_includes=*.id&_source_excludes=entities'
  +GET twitter/_source/1/?_source_includes=*.id&_source_excludes=entities
   --------------------------------------------------
   // CONSOLE
   // TEST[continued]
  
positive.code: The get operation gets hashed into a specific shard id. It then gets
  redirected to one of the replicas within that shard id and returns the
  result. The replicas are the primary shard and its replicas within that
  shard id group. This means that the more replicas we will have, the
  better GET scaling we will have.
  
  
  
negative.code: --------------------------------------------------
  // TESTRESPONSE[s/"_seq_no" : \d+/"_seq_no" : $body._seq_no/ s/"_primary_term" : 1/"_primary_term" : $body._primary_term/]
  
  The above result includes the `_index`, `_id`, and `_version`
  of the document we wish to retrieve, including the actual `_source`
  of the document if it could be found (as indicated by the `found`
  field in the response).
  