@@ -63,7 +63,7 @@ |
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| 63 | 63 | return $this->collection; |
| 64 | 64 | } |
| 65 | 65 | |
| 66 | - /** @return array Collection of table rows(materials) identifiers */ |
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| 66 | + /** @return string|null Collection of table rows(materials) identifiers */ |
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| 67 | 67 | protected function rowIDs() |
| 68 | 68 | { |
| 69 | 69 | // Get collection of nested materials |