Description: Fixes the compatibility with Java 10
Author: Emmanuel Bourg <ebourg@apache.org>
Bug: https://github.com/quartz-scheduler/quartz/pull/252
--- a/quartz-core/src/main/java/org/quartz/xml/XMLSchedulingDataProcessor.java
+++ b/quartz-core/src/main/java/org/quartz/xml/XMLSchedulingDataProcessor.java
@@ -195,7 +195,7 @@
               return XMLConstants.NULL_NS_URI;
           }
         
-          public Iterator<?> getPrefixes(String namespaceURI)
+          public Iterator<String> getPrefixes(String namespaceURI)
           {
               // This method isn't necessary for XPath processing.
               throw new UnsupportedOperationException();