redef fun remove_all(key) do self.remove(key)

	redef fun remove_all(item)
	do
		var map = self.map
		var i = map._items.length - 1
		while i >= 0 do
			if map._items[i].second == item then
				map.remove_at_index(i)
			end
			i -= 1
		end
	end

	redef fun remove_all(key) do self.map.remove_node(key)

	redef fun remove_all(item)
	do
		var map = self.map
		var c = map._first_item
		while c != null do
			if c._value == item then
				map.remove_node(c._key)
			end
			c = c._next_item
		end
	end

	redef fun remove_all(node) do
		for n in self do
			if node == n then remove_node(n)
		end
	end

	# Synonym of remove since there is only one item
	redef fun remove_all(item) do remove(item)

	redef fun remove_all(item) do remove(item)

	redef fun remove_all(item)
	do
		var i = index_of(item)
		while i >= 0 do
			remove_at(i)
			i = index_of_from(item, i)
		end
	end

	redef fun remove_all(e)
	do
		if not has(e) then return
		remove e
	end

	redef fun remove_all(e)
	do
		mutex.lock
		real_collection.remove_all(e)
		mutex.unlock
	end