From edb18ddcde89bcd388d83b1c8bfe313fd982e644 Mon Sep 17 00:00:00 2001
From: Eugene Mamaev <zzzneg@yandex.ru>
Date: Thu, 12 Aug 2021 10:24:13 +0300
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https://github.com/enhorse/java-interview/issues/86
Убрал ошибку компиляции с возвращаемым типом.
---
 concurrency.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/concurrency.md b/concurrency.md
index 0f4042f..f0cb7e8 100644
--- a/concurrency.md
+++ b/concurrency.md
@@ -812,7 +812,7 @@ __busy spin__ – это техника, которую программисты
 class NonBlockingStack<T> {
     private final AtomicReference<Element> head = new AtomicReference<>(null);
 
-    Stack<T> push(final T value) {
+    NonBlockingStack<T> push(final T value) {
         final Element current = new Element();
         current.value = value;
         Element recent;