# RedBlackTree node (can be red or black)
class RBTreeNode[K: Comparable, E]
	super BinTreeNode[K, E]

	redef type N: RBTreeNode[K, E]

	# Is the node red?
	private var is_red = true

	redef fun to_dot do
		if is_red then
			return "\"{self}\"[style=filled,fillcolor=red,fontcolor=white];\n"
		else
			return "\"{self}\"[style=filled,fillcolor=black,fontcolor=white];\n"
		end

	end
end