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: // TEST[continued]
  
  The above will get a tweet with id `2`, but will be routed based on the
  user. Note, issuing a get without the correct routing, will cause the
  document not to be fetched.
  
  [float]
  
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).
  