[null,null,["最后更新时间 (UTC):2024-12-05。"],[[["This method is deprecated and should be replaced with `course.announcements.addOnAttachments`, `course.courseWork.addOnAttachments`, or `course.courseWorkMaterials.addOnAttachments`."],["It retrieves an add-on attachment, requiring the requesting add-on to be the attachment's original creator."],["The request must specify the `courseId`, `attachmentId`, and `itemId` (identifying the parent Announcement, CourseWork, or CourseWorkMaterial)."],["Potential errors include `PERMISSION_DENIED`, `INVALID_ARGUMENT`, and `NOT_FOUND`."],["Authorization requires specific OAuth scopes related to Classroom add-ons."]]],[]]