ToSingletonList implements InputOutput<T, List<? extends T>> { @Override public T getInput() { return input; }  @Override T getInput(); @Override void setInput(final T input); @Override TypeReference<List<? extends T>> getOutputTypeReference(); @Override ToSingletonList<T> shallowClone(); @Override Map<String, String> getOptions(); @Override void setOptions(final Map<String, String> options);  }
@Test @Override public void builderShouldCreatePopulatedOperation() { final ToSingletonList<Integer> operation = new ToSingletonList.Builder<Integer>() .input(1) .build(); assertTrue(operation.getInput().equals(1)); }