docs: public int getFailureCount() {
      int count = 0;
      for (AggregatedTestResultEvent t : getTests()) {
        if (t.getStatus() == TestStatus.FAILURE)
          count++;
      }
      for (FailureMirror m : getFailures()) {
        if (m.isAssertionViolation())
          count++;
      }
      return count;
    }