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<?php var_dump(get_declared_interfaces());
Output for git.master, git.master_jit, rfc.property-hooks
array(25) { [0]=> string(11) "Traversable" [1]=> string(17) "IteratorAggregate" [2]=> string(8) "Iterator" [3]=> string(12) "Serializable" [4]=> string(11) "ArrayAccess" [5]=> string(9) "Countable" [6]=> string(10) "Stringable" [7]=> string(9) "Throwable" [8]=> string(8) "UnitEnum" [9]=> string(10) "BackedEnum" [10]=> string(17) "DateTimeInterface" [11]=> string(13) "DOMParentNode" [12]=> string(12) "DOMChildNode" [13]=> string(16) "JsonSerializable" [14]=> string(17) "RecursiveIterator" [15]=> string(13) "OuterIterator" [16]=> string(16) "SeekableIterator" [17]=> string(11) "SplObserver" [18]=> string(10) "SplSubject" [19]=> string(23) "SessionHandlerInterface" [20]=> string(18) "SessionIdInterface" [21]=> string(38) "SessionUpdateTimestampHandlerInterface" [22]=> string(13) "Random\Engine" [23]=> string(23) "Random\CryptoSafeEngine" [24]=> string(9) "Reflector" }

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