Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?

Question

I see java.util.function.BiFunction, so I can do this:

BiFunction f = (x, y) -> { return 0; };

What if

Answer 1

Alternative is, add the below dependency,

    io.vavr
    vavr
    0.9.0

Now, you can use Vavr Function, like below upto 8 arguments,

3 arguments:

Function3 f = 
      (a, b, c) -> a + b + c;

5 arguments:

Function5 f = 
      (a, b, c, d, e) -> a + b + c + d + e;