[CACHE] Switch to 'empty' rather than 'is_null' is Cache::getHashMapKey, as it may return null or false
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@ -341,7 +341,7 @@ abstract class Cache
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}
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}
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};
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};
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$res = $get();
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$res = $get();
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if (\is_null($res)) {
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if (empty($res)) {
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self::setHashMap($map_key, $calculate_map(), $pool);
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self::setHashMap($map_key, $calculate_map(), $pool);
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$res = $get();
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$res = $get();
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}
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}
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