package org.infinispan.container.versioning; import java.util.HashMap; public class EntryVersionsMap extends HashMap<Object, IncrementableEntryVersion> { public EntryVersionsMap(int size) { super(size); } public EntryVersionsMap() { super(); } public EntryVersionsMap merge(EntryVersionsMap updatedVersions) { if (updatedVersions != null && !updatedVersions.isEmpty()) { updatedVersions.putAll(this); return updatedVersions; } else { return this; } } }