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

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

@@ -0,0 +1,14 @@
+import java.util.concurrent.atomic.AtomicLongFieldUpdater;
+
+class Atomics {
+  private volatile long num;
+  private static final AtomicLongFieldUpdater<Atomics> updater;
+
+  static {
+    (updater) = AtomicLongFieldUpdater.newUpdater(Atomics.class, "num");
+  }
+
+  public long increment() {
+    return updater.incrementAndGet(this);
+  }
+}