anchor.diff:  [float]
   === Use `include_type_name=false` to prepare for upgrade to 8.0
   
  -Index creation, mappings and document APIs support the `include_type_name`
  -option. When set to `false`, this option enables the behavior that will become
  -default in 8.0 when types are removed. See some examples of interactions with
  -Elasticsearch with this option turned off:
  +Index creation and mapping APIs support a new `include_type_name` url parameter 
  +starting with version 6.7. It will default to `true` in version 6.7, default to
  +`false` in version 7.0 and will be removed in version 8.0. When set to `true`, 
  +this parameter enables the pre-7.0 behavior of using type names in the API.
  +
  +See some examples of interactions with Elasticsearch with this option turned off:
   
   [float]
   ==== Index creation
  
positive.code: 
  [source,js]
  ----
  PUT users?include_type_name=true
  {
    "settings": {
      "index.mapping.single_type": true
  
negative.code:       },
        "filter": {
          "match": {
            "type": "tweet" <2>
          }
        }
      }
  