anchor.diff:  %%% @spec show_schedule(task_name()) -> term().
   %%% @end
   -spec show_schedule(binary()) -> term().
  -show_schedule(Task) -> gen_server:call(?SERVER, {show, Task}).
  +show_schedule(Task) -> 
  +    gen_server:call(?SERVER, {show, Task}).
   
   %%% @doc
   %%% Shows schedules of all tasks.
  
positive.code: %%% @spec cancel_task(task_name()) -> term().
  %%% @end
  -spec cancel_task(task_name()) -> term().
  cancel_task(Task) -> gen_server:call(?SERVER, {cancel, Task}).
  
  %%% @doc
  %%% Shows the registered schedule of the task.
  
negative.code: %%% @spec members() -> term().
  %%% @end
  -spec join_node(node()) -> term().
  join_node(Node) -> 
      gen_server:cast(?SERVER, {join, Node}).
  
  %%% @doc
  %%% Leaves a node from barile members.
  