anchor.diff:  * `dcp_title` - content title - used to present document in basic search GUI - can be directly set by content provider during push
   * `dcp_url_view` - URL where document can be viewed in original system in human readable form - used to open document from basic search GUI - can be directly set by content provider during push
   * `dcp_description` - short text representing content - used to show content in basic search GUI for queries which do not produce highlights - can be directly set by content provider during push
  -
   
   DCP Content described by example:
   
  
positive.code: Delete defined content from DCP.
  DELETE /rest/content/{dcp_content_type}/{dcp_content_id}{?ignore_missing}
  < 200
  < 404
  
  --
  Search API
  
negative.code: < 200
  < Content-Type: application/json
  { "foo": "bar" }
  
  < 404
  
  Get all content of specified provider type.
  