Get the list of NeoEdge pointing from self

Edges are loaded lazily

Property definitions

neo4j $ NeoNode :: out_edges
	# Get the list of `NeoEdge` pointing from `self`
	#
	# Edges are loaded lazily
	fun out_edges: List[NeoEdge] do return internal_out_edges or else load_out_edges
lib/neo4j/neo4j.nit:638,2--641,81