Fix PMD issue

Author: JohannesRabauer

spring-data-eclipse-store/src/main/java/software/xdev/spring/data/eclipse/store/repository/lazy/SpringDataEclipseStoreLazy.java

@@ -17,6 +17,7 @@
 
 import java.lang.reflect.Field;
 import java.util.Objects;
+import java.util.concurrent.locks.ReentrantLock;
 import java.util.function.Consumer;
 
 import org.eclipse.serializer.collections.HashEnum;
@@ -67,7 +68,7 @@ static <T> SpringDataEclipseStoreLazy.Default<T> buildWithLazy(final Lazy<T> laz
 	 *
 	 * @param <T> the type of the lazily referenced element
 	 */
-	@SuppressWarnings({"java:S2065"})
+	@SuppressWarnings({"java:S2065", "PMD.AvoidSynchronizedStatement"})
 	final class Default<T> implements SpringDataEclipseStoreLazy<T>
 	{
 		private T objectToBeWrapped;
@@ -76,6 +77,7 @@ final class Default<T> implements SpringDataEclipseStoreLazy<T>
 		private transient ObjectSwizzling loader;
 		private transient WorkingCopier<T> copier;
 		private transient boolean isStored;
+		private final transient ReentrantLock usageMarksLock = new ReentrantLock();
 		private final transient HashEnum<Object> usageMarks = HashEnum.New();
 
 		private Default(final Lazy<T> lazySubject)