remove annotation in NodeDocumentCache
@@ -29,7 +29,6 @@ import java.util.concurrent.ExecutionException;
import java.util.concurrent.locks.Lock;
import javax.annotation.CheckForNull;
-import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
@@ -124,7 +123,6 @@ public class NodeDocumentCache implements Closeable {
* modification stamps.
* @return number of invalidated entries
*/
- @Nonnegative
public int invalidateOutdated(@Nonnull Map<String, ModificationStamp> modStamps) {
int invalidatedCount = 0;
for (Entry<String, ModificationStamp> e : modStamps.entrySet()) {
