gdk:clipboard-store-async (clipboard priority cancellable func)

clipboard -- a gdk:clipboard object
priority -- an integer with the I/O priority of the request
cancellable -- an optional g:cancellable instance, nil to ignore
func -- a g:async-ready-callback callback function to call when the request is satisfied

Asynchronously instructs the clipboard to store its contents remotely to preserve them for later usage. If the clipboard is not local, this function does nothing but report success.

This function is called automatically when the gtk:application object exit, so you likely do not need to call it.