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## 1.26.0

**`(feat):`** 在 PHP SDK 中添加对显式 null 的支持。设置器方法现在将属性标记为显式设置，确保通过设置器有意设置时，null 值包含在 JSON 序列化中。这区分了省略可选属性和显式将其设置为 null。