/datum
	var/gc_destroyed //Time when this object was destroyed.
	var/list/active_timers  //for SStimer
	var/list/datum_components //for /datum/components
	var/var_edited = FALSE //Warranty void if seal is broken

	var/tmp/unique_datum_id = null

#ifdef TESTING
	var/running_find_references
	var/last_find_references = 0
#endif

// Default implementation of clean-up code.
// This should be overridden to remove all references pointing to the object being destroyed.
// Return the appropriate QDEL_HINT; in most cases this is QDEL_HINT_QUEUE.
/datum/proc/Destroy(force = FALSE, ...)
	tag = null

	var/list/timers = active_timers
	active_timers = null
	for(var/thing in timers)
		var/datum/timedevent/timer = thing
		if(timer.spent)
			continue
		qdel(timer)

	var/list/dc = datum_components
	if(dc)
		var/all_components = dc[/datum/component]
		if(length(all_components))
			for(var/I in all_components)
				var/datum/component/C = I
				qdel(C, FALSE, TRUE)
		else
			var/datum/component/C = all_components
			qdel(C, FALSE, TRUE)
		dc.Cut()

	return QDEL_HINT_QUEUE


/datum/nothing
	// Placeholder object, used for ispath checks. Has to be defined to prevent errors, but shouldn't ever be created.