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<?php class Demo extends Random\IntervalBoundary {}
Output for 8.3.0 - 8.3.12
Fatal error: Non-enum class Demo cannot implement interface UnitEnum in /in/8VLv9 on line 3
Process exited with code 255.
Output for 8.1.0 - 8.1.30, 8.2.0 - 8.2.24
Fatal error: Uncaught Error: Class "Random\IntervalBoundary" not found in /in/8VLv9:3 Stack trace: #0 {main} thrown in /in/8VLv9 on line 3
Process exited with code 255.

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