anchor.diff:  %% @equiv cluster_time_milli_seconds() div 1000
   %% @end
   %%--------------------------------------------------------------------
  --spec cluster_time_seconds() -> non_neg_integer().
  +-spec cluster_time_seconds() -> seconds().
   cluster_time_seconds() ->
       cluster_time_millis() div 1000.
   
  
positive.code: %% @equiv erlang:system_time(milli_seconds).
  %% @end
  %%--------------------------------------------------------------------
  -spec system_time_millis() -> non_neg_integer().
  system_time_millis() ->
      erlang:system_time(milli_seconds).
  
  
negative.code: -export([system_time_seconds/0, system_time_millis/0]).
  -export([cluster_time_seconds/0, cluster_time_millis/0]).
  -export([remote_timestamp/2]).
  -export([epoch_to_iso8601/1, iso8601_to_epoch/1]).
  -export([datetime_to_epoch/1, epoch_to_datetime/1]).
  -export([datetime_to_datestamp/1, datestamp_to_datetime/1]).
  
  %%%===================================================================
  %%% API
  