1 files changed, 9 insertions, 1 deletions
diff --git a/Swiften/Parser/XMLParserClient.h b/Swiften/Parser/XMLParserClient.h
index e4346f6..0682320 100644
--- a/Swiften/Parser/XMLParserClient.h
+++ b/Swiften/Parser/XMLParserClient.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010 Isode Limited.
+ * Copyright (c) 2010-2019 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
@@ -17,5 +17,13 @@ namespace Swift {
             virtual void handleStartElement(const std::string& element, const std::string& ns, const AttributeMap& attributes) = 0;
             virtual void handleEndElement(const std::string& element, const std::string& ns) = 0;
             virtual void handleCharacterData(const std::string& data) = 0;
+
+            /**
+             * Signal that a namespace prefix has been declared
+             * This callback might be called multiple times for a single element,
+             * and will trigger before the corresponding \ref handleStartElement
+             * is called.
+             */
+            virtual void handleNamespaceDeclaration(const std::string& prefix, const std::string& uri);
     };
 }