anchor.diff:  get_blackboard(BBName) -> ng.
   
   %% @doc Pings a random vnode to make sure communication is functional
  -ping() ->
  -    DocIdx = riak_core_util:chash_key({<<"ping">>, term_to_binary(now())}),
  -    PrefList = riak_core_apl:get_primary_apl(DocIdx, 1, easymmo_ai),
  -    [{IndexNode, _Type}] = PrefList,
  -    riak_core_vnode_master:sync_spawn_command(IndexNode, ping, easymmo_ai_vnode_master).
   
   blackboard_start() ->
       DocIdx = riak_core_util:chash_key({<<"system">>, <<"blackboard">>}),
  
positive.code: 	blackboard_delete_info/1,
  	blackboard_get_all_neighbors/1,
  
  	ping/0,
  	lock_addnew/2,
  	lock_button/2,
  	get_state/1,
  
negative.code: 	blackboard_delete_info/1,
  	blackboard_get_all_neighbors/1,
  
  	lock_addnew/2,
  	lock_button/2,
  	get_state/1,
  