End Node
End 表示流程结束，并给出最终输出。
Guide
例如，报销单提交成功后，系统返回“提交成功、报销单编号、当前审批人”。
如果用户没有权限，则返回“无权提交”；如果缺少发票，则返回“提交失败，需要补充发票”。
可以把它理解成：流程出口。
Flow Nodes
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These docs are structured for the Nerdics backend engineering workflow. Additional guides can be added under the same left navigation groups as the product surface expands.