support Java 8 default interface methods
support Java 8 default interface methods

MaartenR/avian,joshuawarner32/avian,lwahlmeier/avian,dicej/avian,dicej/avian,lwahlmeier/avian,lwahlmeier/avian,joshuawarner32/avian,MaartenR/avian,dicej/avian,joshuawarner32/avian,MaartenR/avian,dicej/avian,joshuawarner32/avian,lwahlmeier/avian,MaartenR/avian