8068901: Surprising behavior with more than one functional interface on a class
8068903: Can't invoke vararg @FunctionalInterface methods
Reviewed-by: attila, hannesw
fc invoked as a function
c invoked as a consumer
fc invoked as a function
cf invoked as a consumer
f invoked as a function
cf invoked as a consumer
c invoked as a consumer
fc invoked as a function
f invoked as a function
cf invoked as a consumer