[unrelated] Add missing umlx ResourceFactory registration
diff --git a/plugins/org.eclipse.qvtd.umlx/plugin.xml b/plugins/org.eclipse.qvtd.umlx/plugin.xml
index 0f09735..0963122 100644
--- a/plugins/org.eclipse.qvtd.umlx/plugin.xml
+++ b/plugins/org.eclipse.qvtd.umlx/plugin.xml
@@ -25,6 +25,12 @@
             class="org.eclipse.qvtd.umlx.resource.UMLXResourceFactoryImpl"/>
    </extension>
 
+   <extension point="org.eclipse.emf.ecore.extension_parser">
+      <parser
+            type="umlx"
+            class="org.eclipse.qvtd.umlx.resource.UMLXResourceFactoryImpl"/>
+   </extension>
+
    <extension point="org.eclipse.emf.ecore.generated_package">
       <package
             uri="http://www.eclipse.org/qvt/2016/UMLX"