public Results get_distro_upgrades (Cancellable? cancellable, ProgressCallback progress_callback) throws Error
This method should return a list of distribution upgrades that are available.
It should not return updates, only major upgrades.
Warning: this function is synchronous, and may block. Do not use it in GUI applications.
a valid Client instance
a Cancellable or
the function to run when the progress changes
data to pass to
a Results object, or