docs: public static Matcher<PrintableResult> failureCountIs(final int count) {
          return new TypeSafeMatcher<PrintableResult>() {
              public void describeTo(Description description) {
                  description.appendText("has " + count + " failures");
              }
  
              @Override
              public boolean matchesSafely(PrintableResult item) {
                  return item.failureCount() == count;
              }
          };
      }