anchor.diff:                 "blueprint":"lambda",
               }
   
  -+ Response 200 (application/json)
  -
  -        {
  -          "eventId":1
  -        }
  -
  -
  -## Retrieve events [/events{?since}]
  -Retrieve events for the authenticated user
  +### Retrieve events [GET]
  +
  ++ Response 200
  +
  +    [Retrieve events][]
  +
  +# Group Usage
  +
  +Usage resources provide insights into user activities.
  +
  +## User usage [/user/usage{?since,cloud,zone,vmtype,hours,account,user,blueprint}]
   
   + Parameters
  -    + since (optional, string) ... Timestamp
  -
  -+ Model (application/json)
  -
  -    JSON representation of the event
  -
  -    + Headers
  -
  -            x-auth-token: user:c45sdfdsfo234jgkhsdgf324
  -
  -    + Body
  -
  -            {
  -               "eventTimestamp":"1409929066 ",
  -               "eventType":"STACK_STARTED"
  -               "userName":"John Doe",
  -               "userId":14,
  -               "accountName":"Company gmbh."
  -               "accountId":5
  -               "eventDescription":"Stack Started",
  -               "cloud":"AWS",
  -               "region":"eu-west-1",
  -               "vmType":"xlarge",
  -               "blueprint":"lambda",
  -            }
  -
  -### Retrieve events [GET]
  -
  -+ Response 200
  -
  -    [Retrieve events][]
  -
  -# Group Usage
  -
  -Usage resources provide insights into user activities.
  -
  -
  -## Retrieve account usage [/account/usage{?since,cloud,zone,vmtype,hours,account,user,blueprint}]
  -
  -Retrieves usage information for the account of the authenticated user (administrators only)
  -
  -+ Parameters
  -    + since (optional, string) ... Timestamp
  -    + cloud (optional, string) ... The cloud provider
  -    + zone (optional, string) ... the region
  +    + since (optional, string) ... timestamp indicating the day the usage information is to be retrieved from
  +    + cloud (optional, string) ... the cloud provider (eg.: AWS)
  +    + zone (optional, string) ... the region where the stack is running
       + vmtype (optional, string) ... the instance type
  -    + hours (optional, integer) ... running hours
  +    + hours (optional, integer) ... the minimum amount of running hours
       + account (optional, long) ... account identifier
       + user (optional, long) ... user identifier
       + blueprint (optional, long) ... blueprint identifier
  
positive.code:               "blueprint":"lambda-architecture"
              }
  
  ### Retrieve filtered usage information for the account [GET]
  
   + Response 200
  
        [Retrieve account usage][]
  
  
  ## User usage [/user/usage{?since,cloud,zone,vmtype,hours,account,user,blueprint}]
  ### Retrieve user usage [GET]
  
  Retrieve usage information for the authetnicated user.
  
  + Response 200
  
       [Retrieve account usage][]
  
  ## Deployer usage [/usage{?since,cloud,zone,vmtype,hours,account,user,blueprint}]
  ### Retrieve deployer usage [GET]
  
  Retrieve usage information for the deployer user.
  
  + Response 200
  
       [Retrieve account usage][]
  
negative.code: 
              {
                 "eventTimestamp":"1409929066 ",
                 "eventType":"STACK_STARTED",
                 "eventMessage:"Stack started",
                 "userName":"John Doe",
                 "userId":14,
                 "accountName":"Company gmbh."
  