### Question:
IgnoreLeftFunction implements BinaryFunction<L, R, T> { public static <L, R, T> IgnoreLeftFunction<L, R, T> adapt(Function<? super R, ? extends T> function) { return null == function ? null : new IgnoreLeftFunction<L, R, T>(function); } IgnoreLeftFunction(Function<? super R, ? extends T> function); T evaluate(L left, R right); @Override boolean equals(Object obj); @Override int hashCode(); @Override String toString(); static IgnoreLeftFunction<L, R, T> adapt(Function<? super R, ? extends T> function);  }### Answer:
@Test public void testAdaptNull() throws Exception { assertNull(IgnoreLeftFunction.adapt(null)); }
@Test public void testAdapt() throws Exception { assertNotNull(IgnoreLeftFunction.adapt(Constant.of("xyzzy"))); }