anchor.diff:  %% @doc If a Method not in this list is requested, then a
   %% 	`405 Method Not Allowed' will be sent.
   allowed_methods(ReqData, Context) ->
  -	{['POST', 'GET', 'HEAD', 'DELETE', 'PUT'], ReqData, Context}.
  +	{['POST', 'GET', 'HEAD', 'DELETE', 'PUT', 'OPTIONS'], ReqData, Context}.
   
   -spec content_types_accepted(ReqData :: rd(), Context :: state()) ->
   	{[{MediaType :: string(), Handler :: atom()}],
  
positive.code: 		'DELETE' ->
  			{[{"application/json", delete_subscriber}], NewReqData, Context}
  	end.
  
  -spec post_is_create(ReqData :: rd(), Context :: state()) ->
  	{Result :: boolean(), ReqData :: rd(), Context :: state()}.
  
negative.code: 		delete_resource/2,
  		find_subscriber/2,
  		add_subscriber/2,
  		update_subscriber/2,
  		options/2]).
  
  -include("ocs_wm.hrl").
  
  