anchor.diff:  %% API
   -export([start_link/0, stop/0, get_ip_address/0, refresh_ip_address/0,
       modules/0, listeners/0, cluster_worker_modules/0,
  -    cluster_worker_listeners/0, get_cluster_nodes_ips/0]).
  +    cluster_worker_listeners/0, get_cluster_nodes_ips/0, start_worker/2]).
   -export([single_error_log/2, single_error_log/3, single_error_log/4,
       log_monitoring_stats/3]).
   -export([init_report/0, init_counters/0]).
  
positive.code:     file:write_file(LogFile,
          io_lib:format("~n~s, ~s: " ++ Format, [Date, Time | Args]), [append]),
      ok.
  
  %%%===================================================================
  %%% gen_server callbacks
  
negative.code: %%--------------------------------------------------------------------
  %% @private
  %% @doc
  %% Plans next tasks list checking.
  %% @end
  %%--------------------------------------------------------------------
  