Java: Take into account writes to the field done via AtomicFieldUpdater (IDEA-152262)

java/java-tests/testData/codeInsight/atomicReferenceImplicitUsage/LongGetAndSet.java

@@ -0,0 +1,20 @@
+import java.util.concurrent.atomic.AtomicLongFieldUpdater;
+import java.util.function.BiFunction;
+
+class Atomics {
+  private volatile long num;
+  private static final AtomicLongFieldUpdater<Atomics> updater =
+    AtomicLongFieldUpdater.newUpdater(Atomics.class, "num");
+
+  public long getLong() {
+    return updater.get(this);
+  }
+
+  public long getAndSet(long n) {
+    return update(updater::getAndSet, n);
+  }
+
+  private long update(BiFunction<Atomics, Long, Long> f, long n) {
+    return f.apply(this, n);
+  }
+}