Added FULL_MASK, NO_MASK constant values for each value type.
diff --git a/java_gen/pre-written/src/main/java/org/openflow/types/ICMPv4Code.java b/java_gen/pre-written/src/main/java/org/openflow/types/ICMPv4Code.java
index 42cc5be..21c9c1e 100644
--- a/java_gen/pre-written/src/main/java/org/openflow/types/ICMPv4Code.java
+++ b/java_gen/pre-written/src/main/java/org/openflow/types/ICMPv4Code.java
@@ -13,6 +13,9 @@
     final static short MAX_CODE = 0xFF;
 
     private final short code;
+    
+    public static final ICMPv4Code FULL_MASK = new ICMPv4Code((short)0xFFFF);
+    public static final ICMPv4Code NO_MASK = new ICMPv4Code((short)0x0000);
 
     private ICMPv4Code(short code) {
         this.code = code;