anchor.diff:  
           {
              "type": "Room",
  -            "id": "Boe_Idearium"
  +           "id": "Boe_Idearium"
           }
   
   ### Several entity attributes [GET /v2/entities/{entityId}{?attrs}]
  
positive.code: ### By pattern matching [GET /v2/entities{?idPattern,options}]
  
  + Parameters
      + idPattern: DC_* (optional, string) - Only retrieve entities which id matches this pattern.
      + options: keyValues (optional, string) - rendering options
  
  + Response 200 (application/json)
  
negative.code:     of the region, for instance, 'polygon;exterior'
      + limit: 20 - Limit the number of results (optional, number) - Maximum number of results to return
      + attrs: seatsNumber (optional, string) - Attributes to be returned
      + options: count,keyValues (optional, string) - query options (count total, keyValues mode)
  
  + Response 200 (application/json)
  
  