val key = read() as Any
            val value = read()
            when (clazz) {
                ConfigurationCacheEnvironmentChangeTracker.SystemPropertyMutate::class.java ->
                    ConfigurationCacheEnvironmentChangeTracker.SystemPropertyMutate(key, value, PropertyTrace.Unknown)
                ConfigurationCacheEnvironmentChangeTracker.SystemPropertyLoad::class.java ->

        }

        fun isSystemPropertyMutated(key: String): Boolean {
            return systemPropertiesCleared || mutatedSystemProperties[key] is SystemPropertyMutate
        }

        fun isSystemPropertyLoaded(key: String): Boolean {
            return mutatedSystemProperties[key] is SystemPropertyLoad
        }