直接的方法为再次调用数据工厂来创建恰当类型的对象，随后将其指派给其父对象的属性。

The straightforward way is to call the data factory again to create an object of the appropriate type, then assign it to the property in its parent object.

youdao

直接的方法为再次调用数据工厂来创建恰当类型的对象，随后将其指派给其父对象的属性。

The straightforward way is to call the data factory again to create an object of the appropriate type, then assign it to the property in its parent object.

youdao