def split_network(self):
    '\n        Split the network of four nodes into nodes 0/1 and 2/3.\n        '
    disconnect_nodes(self.nodes[1], 2)
    disconnect_nodes(self.nodes[2], 1)
    self.sync_all(self.nodes[:2])
    self.sync_all(self.nodes[2:])
Split the network of four nodes into nodes 0/1 and 2/3.
def split_network(self):
    '\n        \n        '
    disconnect_nodes(self.nodes[1], 2)
    disconnect_nodes(self.nodes[2], 1)
    self.sync_all(self.nodes[:2])
    self.sync_all(self.nodes[2:])