+/**
+ * modest_msg_edit_window_set_custom_header_pairs:
+ * @win: a #ModestMsgEditWindow
+ * @header_pairs: a #TnyList of #TnyPair
+ *
+ * sets a list of custom header pairs that will be added to the created
+ * #TnyMsg.
+ */
+void
+modest_msg_edit_window_set_custom_header_pairs (ModestMsgEditWindow *self,
+ TnyList *header_pairs);
+