如果指定的属性名称已使用，该方法将该属性替换成新的属性。

If the name specified is already used for an attribute, this method will replace the attribute with the new to the new attribute.

youdao

如果指定的属性名称已使用，该方法将该属性替换成新的属性。

If the name specified is already used for an attribute, this method will replace the attribute with the new to the new attribute.

youdao