anchor.diff:      + since (optional, string) ... Timestamp
       + cloud (optional, string) ... The cloud provider
       + zone (optional, string) ... the region
  -    + vmType (optional, string) ... the instance type
  +    + vmtype (optional, string) ... the instance type
       + hours (optional, integer) ... running hours
       + account (optional, long) ... account identifier
       + user (optional, long) ... user identifier
  
positive.code: 
          }
  
  # Group events
  
  Events are used to track stack creation initiated by cloudbreak users.
  
  
negative.code: 
  
  ## Retrieve events [/events{?since}]
  Retrieve events for the authenticated user
  
  + Parameters
      + since (optional, string) ... Timestamp
  