slice['node_ids'] = []
nodes = self.driver.shell.GetNodes({'node_ids': slice['node_ids']})
current_slivers = [node['node_id'] for node in nodes]
slice['node_ids'] = []
nodes = self.driver.shell.GetNodes({'node_ids': slice['node_ids']})
current_slivers = [node['node_id'] for node in nodes]