对类型 "%1.%2" 做标记以进行本机序列化，但是类型 "%4.%5" 的字段 "%3" 为 "%6.%7" 类型(它是非值类型)。本机序列化类型只能有可直接复制到本机结构中的字段类型。如果希望有任何其他类型的字段，请考虑使用其他的序列化格式，如用户定义序列化。

Type "%1.%2" is marked for native serialization, but field "%3" of type "%4.%5" is of type "%6.%7" which is a non-value type. Native serialization types can only have fields of blittable types. If you wish to have a field of any other type, consider using different kind of serialization format, such as User Defined Serialization.