getProperties returns nullk for no properties

diff --git a/src/jalview/datamodel/AlignmentI.java b/src/jalview/datamodel/AlignmentI.java
index f937bd3..9141a51 100755 (executable)
--- a/src/jalview/datamodel/AlignmentI.java
+++ b/src/jalview/datamodel/AlignmentI.java
@@ -260,7 +260,7 @@ public interface AlignmentI
   public Object getProperty(Object key);
   /**
    * Get the property hashtable.
-   * @return hashtable of alignment properties (if any)
+   * @return hashtable of alignment properties (or null if none are defined)
    */
   public Hashtable getProperties();
 }