get_cookies
Description:
[ Version ( since = "2.20" ) ]
public async List<Cookie> get_cookies (string uri, Cancellable? cancellable = null) throws Error
  public async List<Cookie> get_cookies (string uri, Cancellable? cancellable = null) throws Error
Asynchronously get a list of Cookie from this.
Asynchronously get a list of Cookie from this 
      associated with uri, which must be either an HTTP or an HTTPS URL.
When the operation is finished, callback will be called. You can then call get_cookies.end to get the 
      result of the operation.
Parameters:
| this | |
| uri | the URI associated to the cookies to be retrieved | 
| cancellable | a Cancellable or null to ignore | 
| callback | a TaskReadyCallback to call when the request is satisfied | 
| user_data | the data to pass to callback function |