anchor.diff:          {ok, JsonRes} ->
               {ok, JsonRes};
           {error, Error} ->
  +            lager:debug("Delete key pair error: ~p", [Error]),
               {error, Error}
       end.
   
  
positive.code:     case libcloud_wrapper(JsonInput) of
          {ok, JsonRes} ->
              {ok, JsonRes};
          {error, _} = Error ->
              Error
      end.
  
  %%------------------------------------------------------------------------------
  
negative.code:     case libcloud_wrapper(JsonInput) of
          {ok, JsonRes} ->
              {ok, JsonRes};
          {error, Error} ->
              lager:debug("Security group listing error: ~p", [Error]),
              {error, Error}
      end.
  
  %%------------------------------------------------------------------------------
  