An exception-toss error condition is really an implementationrequirement (see below) and should be listed in the "Requirements" or "implementation notes" sections.
异常抛出错误条件实际上是实现需求(见以下部分)，应该在“需求”或“实现注意事项”部分中列出。
2
This is not a requirement: It is an implementation decision.
这并不是一项需求：它只是一项实现决策。
3
How do they manage testing of the implementation of that requirement?