如果env属性被设置为dev，则使用开发部署信息。
If the env property were set to dev then the development deployment information would be used.
然后请求对象中的 numbers 属性被设置为该集合。
Then the numbers attribute in the request object is set to that collection.
如果env属性被设置为qa，那么将使用qa部署信息，等等。
If the env property were set to qa, then the qa deployment information would be used, and so on.
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