apollo-client/src/main/java/com/ctrip/framework/apollo/spring/annotation/ApolloProcessor.java/ApolloProcessor/findAllMethod
class ApolloProcessor:  private List<Method> findAllMethod(Class clazz) {
    final List<Method> res = new LinkedList<>();
    ReflectionUtils.doWithMethods(clazz, new ReflectionUtils.MethodCallback() {
      @Override
      public void doWith(Method method) throws IllegalArgumentException, IllegalAccessException {
        res.add(method);
      }
    });
    return res;
  }