anchor.diff:      ok.
   
   init_per_group(assumptions, Config) -> Config;
  +init_per_group(genesis, Config) -> Config;
   init_per_group(hard_fork, Config) -> Config;
   init_per_group(hard_fork_all, Config) ->
       {_, {restore_db_backup_on_old_node, SavedCfg}} =
  
positive.code: % Test cases
  -export([
           old_node_persisting_chain_and_not_mining_has_genesis_as_top/1,
           new_nodes_can_mine_and_sync_fast_minimal_chain_with_pow/1,
           restore_db_backup_on_old_node/1,
           old_node_can_receive_chain_from_other_old_node/1,
  
negative.code:     [
       {assumptions,
        [
         {genesis,
          [sequence], %% Hard deps among tests.
          [
           old_node_persisting_chain_and_not_mining_has_genesis_as_top,
           new_node_persisting_chain_and_not_mining_has_same_old_genesis_as_top
          ]},
         new_nodes_can_mine_and_sync_fast_minimal_chain_with_pow
        ]},
       {hard_fork,
  