refactor naming & superfluous check
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@@ -30,7 +30,7 @@ class ConfigCache implements IConfigCache, IPConfigCache
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$categories = array_keys($config);
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foreach ($categories as $category) {
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if (isset($config[$category]) && is_array($config[$category])) {
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if (is_array($config[$category])) {
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$keys = array_keys($config[$category]);
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foreach ($keys as $key) {
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