anchor.diff:      List -> List
     end.
   
  +
   %% @private
   %% Convert maps or proplists to bson
   prepare_doc(Docs) when is_list(Docs) ->  %list of documents
  
positive.code:   }, SetOpts),
    mc_connection_man:process_reply(Doc, Command).
  
  
  %% @private
  prepare_and_assign(Docs) when is_tuple(Docs) ->
    case element(1, Docs) of
      <<"$", _/binary>> -> Docs;  %command
  
negative.code:   command/2,
    sync_command/4,
    ensure_index/3
    , prepare_and_assign/1]).
  
  
  -type cursorid() :: integer().
  