java_gen: add support for object hashing via the guava hash API
diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/PrimitiveSinkable.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/PrimitiveSinkable.java
new file mode 100644
index 0000000..e50cb75
--- /dev/null
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/PrimitiveSinkable.java
@@ -0,0 +1,7 @@
+package org.projectfloodlight.openflow.types;
+
+import com.google.common.hash.PrimitiveSink;
+
+public interface PrimitiveSinkable {
+ public void putTo(PrimitiveSink sink);
+}