@@ -3,7 +3,6 @@ |
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| 3 | 3 | namespace Wikibase\DataModel\Entity; |
| 4 | 4 | |
| 5 | 5 | use InvalidArgumentException; |
| 6 | -use Serializable; |
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| 7 | 6 | |
| 8 | 7 | /** |
| 9 | 8 | * Base class for hierarchical entity IDs. Hierarchical entity IDs are addresses that can be |