Property definitions

functional $ Proc4 :: call
	fun call(a0: A0,a1: A1,a2: A2,a3: A3) is abstract
lib/functional/functional_types.nit:67,2--50

functional $ ProcRef4 :: call
	redef fun call(a0,a1,a2,a3) is intern
lib/functional/functional_types.nit:227,2--38