make sure no argument types are lost on "using" (fixed issue #853)
make sure no argument types are lost on "using" (fixed issue #853)

pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe