Load a node from base

Data, labels and edges will be loaded lazily.

Property definitions

neo4j $ Neo4jClient :: load_node
	# Load a node from base
	# Data, labels and edges will be loaded lazily.
	fun load_node(url: String): NeoNode do
		if local_nodes.has_key(url) then
			var node = local_nodes[url]
			if node != null then return node
		end
		var node = new NeoNode.from_neo(self, url)
		local_nodes[url] = node
		return node
	end
lib/neo4j/neo4j.nit:135,2--145,4