code: public void injectClasses(List<Class<?>> classes) {
      for (Class<?> klass : classes) {
        try {
          inject(klass);
        } catch (Exception e) {
          String msg = "Failed to inject: " + klass.getName().toString() + " - " + e.getMessage();
          Log.warn(msg);
          SystemUtils.trace("twine", msg);
        }
      }
    }
docs: {@inheritDoc}