anchor.diff:  [float]
   ==== Index templates
   
  -It is recommended to make index templates typeless before upgrading to 7.0 by
  -re-adding them with `include_type_name` set to `false`.
  +It is recommended to make index templates typeless by re-adding them with
  +`include_type_name` set to `false`. Under the hood, typeless templates will use
  +the dummy type `_doc` when creating indices.
   
   In case typeless templates are used with typed index creation calls or typed
   templates are used with typeless index creation calls, the template will still
  
positive.code: ==== Indices APIs
  
  Index creation, index template, and mapping APIs support a new `include_type_name`
  url parameter that specifies whether mapping definitions in requests and responses
  should contain the type name. The parameter defaults to `true` in version 6.7 to
  match the pre-7.0 behavior of using type names in mappings. It defaults to `false`
  in version 7.0 and will be removed in version 8.0.
  
  See some examples of interactions with Elasticsearch with this option provided:
  
  [source,js]
  --------------------------------------------------
  
negative.code:   for auto-generated ids.
  
  * The `include_type_name` parameter in the index creation, index template,
    and mapping APIs will default to `false`. Setting the parameter at all will
    result in a deprecation warning.
  
  * The `_default_` mapping type is removed.
  
  