anchor.diff:  `es.mapping.timestamp` (default none)::
   The document field/property name containing the document timestamp. To specify a constant, use the `<CONSTANT>` format.
   
  +added[2.1]
  +`es.mapping.include` (default none)::
  +Field/property to be included in final the document. Useful for _extracting_ the needed data from entities. The syntax is similar
  +to that of {es} http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-source-filtering.html[include/exclude].
  +Multiple values can be specified by using a comma. By default, no value is specified meaning all properties/fields are included.
  +
  +added[2.1]
  +`es.mapping.exclude` (default none)::
  +Field/property to be excluded in final the document. Useful for _eliminating_ unneeded data from entities. The syntax is similar
  +to that of {es} http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-source-filtering.html[include/exclude].
  +Multiple values can be specified by using a comma. By default, no value is specified meaning no properties/fields are excluded
  +
   For example:
   [source,ini]
   ----
  
positive.code: `es.action.heart.beat.lead` (default 15s)::
  The lead to task timeout before {eh} informs Hadoop the task is still running to prevent task restart.
  
  [float]
  ==== Basic Authentication
  
  `es.net.http.auth.user`:: Basic Authentication user name
  `es.net.http.auth.pass`:: Basic Authentication password
  
  [float]
  ==== SSL
  
  
negative.code: 
  # specifying a parent with id '123'
  es.mapping.parent = \<123>
  
  # combine include / exclude for complete control
  # include 
  es.mapping.include = u*, foo.*
  # exclude
  es.mapping.include = *.description
  ----
  
  Using the configuration above, each entry will have only its top-level fields, starting with u and nested fields under +foo+ included
  in the document with the exception of any nested field named +descriptor+. Additionally the document parent will be +123+ while the
  document id extracted from field +uuid+.
  
  
  [float]
  ==== Metadata
  