# Link between two nodes and associated to a graph
class Link
	serialize

	# Type of the nodes in `graph`
	type N: Node

	# Type of the other links in `graph`
	type L: Link

	# The graph to which belongs `self`
	var graph: Graph[N, L]

	# Origin of this link
	var from: N

	# Endpoint of this link
	var to: N

	init
	do
		graph.add_link(self)
	end
end