Is that link blocked?

Property definitions

a_star $ PathContext :: is_blocked
	# Is that link blocked?
	fun is_blocked(link: L): Bool is abstract
lib/a_star/a_star.nit:349,2--350,42

a_star $ ConstantPathContext :: is_blocked
	redef fun is_blocked(l) do return false
lib/a_star/a_star.nit:371,2--40

a_star $ WeightedPathContext :: is_blocked
	redef fun is_blocked(l) do return false
lib/a_star/a_star.nit:400,2--40

a_star $ PositionPathContext :: is_blocked
	redef fun is_blocked(link) do return false
lib/a_star/tests/test_a_star.nit:291,2--43