diff --git a/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java b/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java
index 25bcab447002..2dc7aabb479f 100644
--- a/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java
+++ b/platform/util/src/com/intellij/util/containers/MostlySingularMultiMap.java
@@ -54,6 +54,10 @@ public class MostlySingularMultiMap<K, V> {
     return myMap.keySet();
   }
 
+  public boolean isEmpty() {
+    return myMap.isEmpty();
+  }
+
   public boolean processForKey(K key, Processor<V> p) {
     return processValue(p, myMap.get(key));
   }