update after annotation package change

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@918416 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/sigil/common/core/src/org/apache/felix/sigil/model/ModelElementSupport.java b/sigil/common/core/src/org/apache/felix/sigil/model/ModelElementSupport.java
index c10aa25..6c74e77 100644
--- a/sigil/common/core/src/org/apache/felix/sigil/model/ModelElementSupport.java
+++ b/sigil/common/core/src/org/apache/felix/sigil/model/ModelElementSupport.java
@@ -35,6 +35,8 @@
 import java.util.WeakHashMap;
 import java.util.logging.Logger;
 
+import org.apache.felix.sigil.model.annotations.Required;
+
 
 public class ModelElementSupport implements Serializable
 {