anchor.diff:          }
   
   + Response 200
  -
  -
  -### Remove an attribute [DELETE /v2/entities/{entityId}/attrs/{attrName}]
  -
  -+ Parameters
  -    + entityId: Bcn_Welt (required, string) - Entity ID
  -    + attrName: temperature (required, string) - Attribute Name
  -
  -+ Response 204
   
   
   # Group Subscriptions
  
positive.code: 
  # Group Context Attributes
  
  ## Context Entity Attributes [/v2/entities/{entityId}/attrs]
  
  ### List all attributes [GET /v2/entities/{entityId}/attrs]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
  
  + Response 200 (application/json)
  
          {
              "temperature": 21.7,
              "humidity": 60,
              "location": {
                  "value":  "41.3763726, 2.1864475",
                  "type": "geo:point",
                  "crs": "WGS84"
              }
          }
  
  ### Replace all attributes [PUT /v2/entities/{entityId}/attrs]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
  
  + Request (application/json)
  
          {
              "temperature": 21.7,
              "relativeHumidity": {
                  "value": 60,
                  "accuracy": 1
              },
              "seatsNumber": 12
          }
  
  + Response 200
  
  
  ### Get a single attribute, including type and metadata values [GET /v2/entities/{entityId}/attrs/{attrName}]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: illuminance (required, string) - Attribute to be retrieved.
  
  + Response 200 (application/json)
  
          {
              "value": 300,
              "type": "number",
              "accuracy": 1.0,
              "unitCode": "LX"
          }
  
  ### Get an attribute value as text [GET /v2/entities/{entityId}/attrs/{attrName}/value{?options}]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute to be retrieved.
      + options: text (optional, string) - Indicates format as text
  
  + Response 200 (text/plain)
  
          300
  
  ### Get an attribute value as JSON [GET /v2/entities/{entityId}/attrs/{attrName}/value]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute to be retrieved.
  
  + Response 200 (application/json)
  
          {
              "value": 300
          }
  
  ### Get an attribute. Not exists [GET /v2/entities/{entityId}/attrs/{attrName}]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: mistake (required, string) - Attribute to be retrieved.
  
  + Response 404 (application/json)
  
  
negative.code:             "error": "NotFound",
              "description": "The entity does not have such an attribute"
          }
          
  
  ### Update [PUT /v2/entities/{entityId}/attrs/{attrName}]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute name.
  
  + Request (application/json)
  
          {
              "value": 25.0,
              "metadata": {
                 "unitCode": "CEL"
              }
          }
  
  + Response 200
  
  
  ### Remove [DELETE /v2/entities/{entityId}/attrs/{attrName}]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute name.
  
  + Response 204
          
  
  ## Attribute Value [/v2/entities/{entityId}/attrs/{attrName}/value]
  
  ### Get. As text [GET /v2/entities/{entityId}/attrs/{attrName}/value]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute name.
      
  + Request
  
    + Headers
  
        Accept: text/plain
  
  + Response 200 (text/plain)
  
          300
  
  
  ### Get. As JSON [GET /v2/entities/{entityId}/attrs/{attrName}/value]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute name.
  
  + Response 200 (application/json)
  
          {
              "value": 300
          }
  
  
  ### Update. As Text [PUT /v2/entities/{entityId}/attrs/{attrName}/value]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute name.
  
  + Request (text/plain)
  
          25.0
  
  + Response 200
  
  
  ### Update. As JSON [PUT /v2/entities/{entityId}/attrs/{attrName}/value]
  
  + Parameters
      + entityId: Bcn_Welt (required, string) - Entity ID
      + attrName: temperature (required, string) - Attribute name.
  
  + Request (application/json)
  
  