anchor.diff:              "type": "StreetParking",
               "id": "A45678",
               "availableSpotNumber": {
  -              "value": 11,
  -              "type": null,
  +              "value":     11,
  +              "type":      "number",
                 "metadata": { }
               },
               "totalSpotNumber": {
  -              "value": 20,
  -              "type": null,
  +              "value":    20,
  +              "type":     "number",
                 "metadata": { }
               },
               "location": {
  
positive.code:             "type": "Room",
              "id": "DC_S1_D41",
              "temperature": 35.6
           },
           {
              "type": "Car",
              "id": "abc345fg",
              "speed": 14.7
           }
          ]
  
  ### Pagination [GET /v2/entities{?limit,offset,options}]
  
  + Parameters
      + options: count
      + limit: 2
      + offset: 2
  
  + Response 200 (application/json)
  
      + Headers
  
              X-Total-Count: 30
              Link: http://example.org/v2/entities?offset=4&limit=2; rel="next", http://example.org/v2/entities?offset=28&limit=2; rel="last",
              http://example.org/v2/entities?offset=0&limit=2; rel="first", http://example.org/v2/entities?offset=2&limit=2; rel="prev"
  
      + Body
  
        [
           {
              "type": "Room",
              "id": "DC_S1_D41",
  
negative.code:                "type": "urn:ogc:def:phenomenon:temperature",
                 "metadata": {
                     "accuracy": {
                         "type":  "none",
                         "value": 0.1
                     }
                 }
              }
  