anchor.diff:  -define(NS_LOG, "ns_log").
   
   get_current_version() ->
  -    {3,0}.
  +    {3,0,1}.
   
   ensure_data_dir() ->
       RawDir = path_config:component_path(data),
  
positive.code:           end, McdConfig),
  
      [{set, McdKey, NewOrUpdatedParams ++ StrippedMcdConfig}].
  
  search_sub_key(Config, Key, Subkey) ->
      case ns_config:search(Config, Key) of
  
negative.code:              upgrade_config_from_2_2_0_to_2_3_0(Config)];
          {value, {2,3,0}} ->
              [{set, {node, node(), config_version}, {3,0}} |
               upgrade_config_from_2_3_0_to_3_0(Config)];
          {value, {3,0}} ->
              [{set, {node, node(), config_version}, {3,0,1}} |
               upgrade_config_from_3_0_to_3_0_1(Config)]
      end.
  
  upgrade_config_from_1_7_to_1_7_1() ->
  