anchor.diff:  
               A comprehensive list of possible errors:
               - `NEED_AUTHENTICATION` if no valid session token has been supplied or the user for whom the token has been created does not exist (anymore)
  +            - `USER_INSUFFICIENT_PERMISSIONS` if the currently authenticated user has insufficient permissions (due to his rank) to perform this action
   
   + Response 404 (application/json)
       + Attributes (object)
  
positive.code: 
              A comprehensive list of possible errors:
              - `REQUEST_UNSUPPORTED_CONTENT_TYPE` if the submitted Content-Type is not `application/json`
  
  
  
  
negative.code: + Response 200 (application/json)
      + Attributes (User List)
  
  + Response 401 (application/json)
      + Attributes (object)
          + status (string) - Textual description of the HTTP status
          + message (string) - Detailed error information, e.g. hint about malformed request
          + i18n (string) - A unique token representing above error description message; can be used for internationalization in frontends
  
              A comprehensive list of possible errors:
              - `NEED_AUTHENTICATION` if no valid session token has been supplied or the user for whom the token has been created does not exist (anymore)
              - `USER_INSUFFICIENT_PERMISSIONS` if the currently authenticated user has insufficient permissions (due to his rank) to perform this action
      
  
  ## Retrieve user details [GET /{name}{?current}]
  
  Retrieves the details of the specified user. If the parameter `current` is specified, the currently authenticated user will be chosen as target. Retrieving details of other users requires moderator permissions (rank 50) or higher.
  