static getLazySerializedValue(fn) {
		if (typeof fn !== "function") return;
		return fn[LAZY_SERIALIZED_VALUE];
	}
@template TLazyInputValue
@template TLazyOutputValue
@template {LazyTarget} TLazyTarget
@template {LazyOptions} TLazyOptions
@param {LazyFunction<TLazyInputValue, TLazyOutputValue, TLazyTarget, TLazyOptions> | EXPECTED_ANY} fn lazy function
@returns {TLazyOutputValue | undefined} serialized value