类型名称：PrependAction
扩展 InsertAction
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最后更新时间 (UTC)：2024-09-04。
[null,null,["最后更新时间 (UTC)：2024-09-04。"],[[["`PrependAction` is a type of action in Gmail markup that extends the `InsertAction` type."],["This type is used to add content to the beginning of an email message or thread and has no unique properties of its own, inheriting its functionality from `InsertAction`."]]],["The core content describes the `PrependAction` type, which extends the `InsertAction` type. Crucially, `PrependAction` itself has no specific properties. The key information is the type's name and its inheritance from another type, indicating its role as a specialized form of `InsertAction` without adding unique attributes. This highlights its function is defined by the parent `InsertAction`, and not on it's own actions.\n"]]