RM-2113. A null-valued search term in the user query is allowed.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/modules/recordsmanagement/HEAD@103489 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

rm-server/source/java/org/alfresco/module/org_alfresco_module_rm/classification/UserQueryParams.java

@@ -50,7 +50,7 @@ public final class UserQueryParams
 
     public UserQueryParams(final String searchTerm)
     {
-        ParameterCheck.mandatoryString("searchTerm", searchTerm);
+        // A 'null' value here is allowed.
         this.searchTerm = searchTerm;
     }