Index: applications/editors/josm/plugins/MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/StreetsideData.java
===================================================================
--- applications/editors/josm/plugins/MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/StreetsideData.java	(revision 35466)
+++ applications/editors/josm/plugins/MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/StreetsideData.java	(revision 35601)
@@ -4,4 +4,5 @@
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
@@ -13,4 +14,6 @@
 import org.apache.commons.jcs3.access.CacheAccess;
 import org.openstreetmap.josm.data.Bounds;
+import org.openstreetmap.josm.data.Data;
+import org.openstreetmap.josm.data.DataSource;
 import org.openstreetmap.josm.data.cache.BufferedImageCacheEntry;
 import org.openstreetmap.josm.gui.MainApplication;
@@ -31,5 +34,5 @@
  * @see StreetsideSequence
  */
-public class StreetsideData {
+public class StreetsideData implements Data {
   private final Set<StreetsideAbstractImage> images = ConcurrentHashMap.newKeySet();
   /**
@@ -412,3 +415,8 @@
     }
   }
+
+  @Override
+  public Collection<DataSource> getDataSources() {
+	return Collections.emptyList();
+  }
 }
Index: applications/editors/josm/plugins/MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/StreetsideLayer.java
===================================================================
--- applications/editors/josm/plugins/MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/StreetsideLayer.java	(revision 35466)
+++ applications/editors/josm/plugins/MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/StreetsideLayer.java	(revision 35601)
@@ -184,4 +184,5 @@
 	 * @return The {@link StreetsideData} object that stores the database.
 	 */
+	@Override
 	public StreetsideData getData() {
 		return data;