@SafeVarargs
  public static <E> IterableChecker<Iterable<E>, E> checkAll(E... actualValues) {
    return new IterableChecker<Iterable<E>, E>(Arrays.asList(actualValues), false);
  }
Convenient wrappers for matcher checking, designed for better code assist(completion) and
discoverability for most commonly used matchers.
testing/src/org/immutables/check/Checkers.java