Function for getting supported options from a server. 
- Parameters:
- 
  
    |  | curl | A pointer to an initialized CURL instance |  |  | url | string containing the URL to the server. If authentication is required prior to making the call the credentials must be available via CURLOPT_USERPWD before calling. |  |  | result | A pointer to a struct _response. If test is true this variable can be NULL. Caller is responsible for freeing associated memory. |  |  | error | A pointer to caldav_error. |  
 
- See also:
- caldav_error 
- Parameters:
- 
  
    |  | test | if this is true response will be whether the server represented by the URL is a CalDAV collection or not. |  
 
- Returns:
- FALSE in case of error, TRUE otherwise.