replaced star import
diff --git a/rest/rest-resources/src/main/java/org/apache/brooklyn/rest/util/MultiSessionAttributeAdapter.java b/rest/rest-resources/src/main/java/org/apache/brooklyn/rest/util/MultiSessionAttributeAdapter.java
index b41fa26..3be897c 100644
--- a/rest/rest-resources/src/main/java/org/apache/brooklyn/rest/util/MultiSessionAttributeAdapter.java
+++ b/rest/rest-resources/src/main/java/org/apache/brooklyn/rest/util/MultiSessionAttributeAdapter.java
@@ -45,7 +45,11 @@
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 import java.lang.reflect.Field;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
 
 /**
  * Convenience to assist working with multiple sessions, ensuring requests in different bundles can