- test_a:
    name: test_node_a
    rollback_one_arg: down
    rollback_two_arg: you

- test_b:
    base: test_node_a
    name: test_node_b
    rollback_one_arg: let
    rollback_two_arg: gonna

- test_a:
    base: test_node_b
    name: test_node_aa
    rollback_one_arg: never
    rollback_two_arg: up

- test_b:
    base: test_node_aa
    name: test_node_bb
    rollback_one_arg: you
    rollback_two_arg: give

- test_a:
    base: test_node_bb
    name: test_node_aaa
    rollback_one_arg: gonna
    rollback_two_arg: never
    trigger_rollback: yes