anchor.diff:  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
  +shard id group. This means that the more replicas we have, the
   better GET scaling we will have.
   
   
  
positive.code: 
  [source,js]
  --------------------------------------------------
  GET twitter/_source/1/?_source_includes=*.id&_source_excludes=entities'
  --------------------------------------------------
  // CONSOLE
  // TEST[continued]
  
negative.code: // TEST[continued]
  
  The above will get a tweet with id `2`, but will be routed based on the
  user. Note that issuing a get without the correct routing will cause the
  document not to be fetched.
  
  [float]
  