void addIfTestMethod(Method m) {
      if(m.getAnnotation(Test.class) == null)
        return;
      if(!(m.getReturnType().equals(boolean.class) ||
          m.getReturnType().equals(void.class)))
        throw new RuntimeException("@Test method" +
          " must return boolean or void");
      m.setAccessible(true); // In case it's private, etc.
      add(m);
    }