Instead you'll see a "non-declared method" error (as you mention) at runtime.

相反，你会看到一个“非声明的方法”的错误(你说)在运行时。

youdao

The government has declared the French ambassador persona non grata and ordered him to leave the country.

该政府已经宣布法国大使为不受欢迎的人，勒令其离境。

《柯林斯英汉双解大词典》

So, although JDO objects can easily be declared as transactional, they must still be accessed using non-transactional components.

因此，尽管很容易将JDO对象声明为事务性的，但仍必须使用非事务性组件来访问它们。

youdao

Another image of Miss Knox at the time of the murder is that of a non-drinker and non-smoker, who declared her favourite pursuits to be yoga and backpacking.

BBC: Profile: Amanda Knox

The anti-Ahmadiyya movement was indicative of this mind-set, and eventually the Ahmadis were declared non-Muslims.

CENTERFORSECURITYPOLICY: Muslim-on-Muslim Violence

Entire categories of contracts for example credit cards, mortgages, or derivatives would have to be declared non-enforceable after a certain date if the parties declined to pay the tax, or insurance fee, or whatever Chief Justice John Roberts decides we should call it.

FORBES: A Tax Both Ayn Rand And Ralph Nader Could Love