Tuple1MapperImpl extends AbstractTupleMapper<T, Tuple1<T0>> implements TupleMapper<T, Tuple1<T0>> { public Function<T, T0> get0() { return getAndCast(0); } Tuple1MapperImpl(Function<T, T0> m0); @Override Tuple1<T0> apply(T t); Function<T, T0> get0();  }
@Test void get0() { assertEquals(m0, instance.get0()); }