diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/OFHelloElement.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/OFHelloElement.java
new file mode 100644
index 0000000..10d06a0
--- /dev/null
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/OFHelloElement.java
@@ -0,0 +1,5 @@
+package org.projectfloodlight.openflow.types;
+
+public interface OFHelloElement {
+
+}