@@ -442,7 +442,7 @@ |
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| 442 | 442 | /** |
| 443 | 443 | * Get compatibility level |
| 444 | 444 | * |
| 445 | - * @return null|string |
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| 445 | + * @return string |
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| 446 | 446 | */ |
| 447 | 447 | public function getCompatibilityLevel() |
| 448 | 448 | { |