---
id: 660add10cb82ac38a17513be
title: Legacy Back End Certificate
challengeType: 7
isPrivate: true
videoUrl: ''
localeTitle: 旧版后端证书
---
## Description
## Instructions
## Tests
```yml
tests:
- text: ''
testString: ! ''
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testString: ! ''
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testString: ! ''
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testString: ! ''
- text: ''
testString: ! ''
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testString: ! ''
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testString: ! ''
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testString: ! ''
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testString: ! ''
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testString: ! ''
```
## Challenge Seed
## Solution
```js
// solution required
```