public interface BiFunctor<W>
<T,R,T2,R2>Higher2<W,R,R2>
bimap(java.util.function.Function<? super T,? extends R> fn, java.util.function.Function<? super T2,? extends R2> fn2, Higher2<W,T,T2> ds)
<T,R,T2,R2> Higher2<W,R,R2> bimap(java.util.function.Function<? super T,? extends R> fn, java.util.function.Function<? super T2,? extends R2> fn2, Higher2<W,T,T2> ds)