anchor.diff:  find_deleted_objects(Table, Key, EndKey, Text, Limit) ->
       find_deleted_objects(Table, Key, EndKey, Text, Limit, []).
   
  +-spec find_deleted_objects(atom(), binary(), binary(), binary(), integer(), list()) -> list().
   find_deleted_objects(_Table, _Key, _EndKey, _Text, 0, Acc) -> Acc;
   find_deleted_objects(_Table, '$end_of_table' , _EndKey, _Text, _Limit, Acc) -> Acc;
   find_deleted_objects(Table, Key , EndKey, <<>>, Limit, Acc) ->
  
positive.code: find_next_clients(Table, ClientKey, KeyBin, EndKey) ->
      find_next_clients(Table, ClientKey, binterm_to_term_key(KeyBin), KeyBin, EndKey).
  
  find_next_clients(_Table, [A, B] = ClientKey, [A,B| _] = _Key, KeyBin, _EndKey) ->
      {ClientKey, KeyBin};
  find_next_clients(Table, ClientKey, [_,_] = Key, KeyBin, EndKey) ->
  
negative.code:     find_deleted_clients(Table, NewClientKey, NextKey, EndKey, Text, NewLimit, NewAcc).
  
  %client search
  -spec find_next_clients(binary(), list(), atom() | binary(), binary()) -> tuple().
  find_next_clients(_Table, ClientKey, '$end_of_table', _EndKey) ->
      {ClientKey, '$end_of_table'};
  find_next_clients(Table, ClientKey, Key, EndKey) when Key > EndKey ->
  