refresh

Description:

public virtual async bool refresh (Cancellable? cancellable) throws Error

Initiates refresh on the this.

Finishing the method doesn't mean that the refresh is done, backend only notifies whether it started refreshing or not. Use check_refresh_supported to check whether the backend supports this method. The call is finished by refresh.end from the callback.

Parameters:

this	an Client
cancellable	a Cancellable; can be `null`
callback	callback to call when a result is ready
user_data	user data for the `callback`