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--- a/src/internfile/mimehandler.h
+++ b/src/internfile/mimehandler.h
@@ -128,6 +128,7 @@
     // It converts from keyorigcharset to UTF-8 and sets keycharset.
     bool txtdcode(const std::string& who);
 
+    std::string metadataAsString();
 protected:
 
     // We provide default implementation as not all handlers need both methods