anchor.diff:  end_per_suite(_Config) ->
       ok.
   
  -init_per_group(assumptions, Config) -> Config;
  -init_per_group(genesis, Config) -> Config;
  -init_per_group(Group, Config) when Group =:= hard_fork; Group =:= hard_fork_with_tx -> Config;
   init_per_group(Group, Config)
     when Group =:= hard_fork_all; Group =:= hard_fork_all_with_tx ->
       {_, {restore_db_backup_on_old_node, SavedCfg}} =
  
positive.code:       [?OLD_NODE1,
         ?NEW_NODE3(Ps),
         ?NEW_NODE4(Ps)], NewConfig),
      NewConfig.
  
  end_per_group(assumptions, _) -> ok;
  end_per_group(genesis, _) -> ok;
  end_per_group(Group, _) when Group =:= hard_fork; Group =:= hard_fork_with_tx -> ok;
  end_per_group(Group, _) when Group =:= hard_fork_all; Group =:= hard_fork_all_with_tx -> ok;
  end_per_group(upgrade_flow_smoke_test, Config) ->
      aest_nodes:ct_cleanup(Config),
      ok;
  
negative.code:         ( (C =:= old_node_persisting_chain_and_not_mining_has_genesis_as_top)
            or (C =:= new_node_persisting_chain_and_not_mining_has_same_old_genesis_as_top)
            or (C =:= new_nodes_can_mine_and_sync_fast_minimal_chain_with_pow)
          )).
  
  %=== COMMON TEST FUNCTIONS =====================================================
  