anchor.diff:  
   [source,js]
   ----
  -PUT users?include_type_name=true
  +PUT users
   {
     "settings": {
       "index.mapping.single_type": true
  
positive.code: 
  [source,js]
  ----
  PUT new_twitter?include_type_name=true
  {
    "mappings": {
      "_doc": {
  
negative.code:       },
        "filter": {
          "match": {
            "type": "tweet" <2>
          }
        }
      }
  