8031359: Invocable.getInterface() works incorrectly if interface has default methods
Reviewed-by: attila, hannesw
escape is function with arity 1
unescape is function with arity 1
This%20is%20great%21
What%20is%20going%20on%20here%3F%3F
%uFFFF%uFFFE%u1FFF
This is great!
What is going on here??