NONE
No locks are used to synchronize the access to the Lazy instance value; if the instance is accessed from multiple threads, its behavior is undefined.
This mode should be used only when high performance is crucial and the Lazy instance is guaranteed never to be initialized from more than one thread.
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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-lazy-thread-safety-mode/-n-o-n-e.html