anchor.diff:  -spec get_leases() -> [#lease{}].
   get_leases() ->
       gen_server:call(?MODULE, {lease_req, get_leases}).
  +
  +%%--------------------------------------------------------------------
  +%% @doc
  +%% Clears all existing leases from the table.
  +%%
  +%% @spec clear_leases() -> ok.
  +%% @end
  +%%--------------------------------------------------------------------
  +-spec clear_leases() -> ok.
  +clear_leases() ->
  +    gen_server:call(?MODULE, {lease_req, clear_leases}).
   
   
   %%%===================================================================
  
positive.code: handle_call({lease_req, get_leases}, _From, State) ->
      Reply = priv_get_leases(),
      lager:info("Request received: {get_leases} -> Reply: ~p"
                ,[Reply]),
      {reply, Reply, State};
  handle_call(_Request, _From, State) ->
  
negative.code: -behaviour(gen_server).
  
  %% API
  -export([start_link/1, stop/0
          ,request_lease/3, end_lease/2
          ,get_leases/0, clear_leases/0]).
  
  %% gen_server callbacks
  -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
  