diff --git a/java_gen/templates/custom/OFMatchV3Ver12.Builder.java b/java_gen/templates/custom/OFMatchV3Ver12.Builder.java
index 3fae367..ae2ecaa 100644
--- a/java_gen/templates/custom/OFMatchV3Ver12.Builder.java
+++ b/java_gen/templates/custom/OFMatchV3Ver12.Builder.java
@@ -1,106 +1 @@
-
-    private OFOxmList.Builder oxmListBuilder;
-
-    private synchronized void initBuilder() {
-        if (oxmListBuilder != null)
-            return;
-        oxmListBuilder = new OFOxmList.Builder();
-    }
-
-    private synchronized void updateOxmList() {
-        this.oxmList = this.oxmListBuilder.build();
-        this.oxmListSet = true;
-    }
-
-    private <F extends OFValueType<F>> OFOxm<F> getOxm(MatchField<F> field) {
-//:: if has_parent:
-        return this.oxmListSet ? this.oxmList.get(field) : parentMessage.oxmList.get(field);
-//:: else:
-        return this.oxmListSet ? this.oxmList.get(field) : null;
-//:: #endif
-    }
-
-    @Override
-    public synchronized <F extends OFValueType<F>> F get(MatchField<F> field)
-            throws UnsupportedOperationException {
-        OFOxm<F> value = getOxm(field);
-        if (value == null)
-            return null;
-        return value.getValue();
-    }
-
-    @Override
-    public synchronized <F extends OFValueType<F>> Masked<F> getMasked(MatchField<F> field)
-            throws UnsupportedOperationException {
-        OFOxm<F> value = getOxm(field);
-        if (value == null || !value.isMasked())
-            return null;
-        // TODO: If changing OXMs to extend Masked, then use it here
-        return Masked.of(value.getValue(), value.getMask());
-    }
-
-    @Override
-    public boolean supports(MatchField<?> field) {
-        return supportsField(field);
-    }
-
-    @Override
-    public boolean supportsMasked(MatchField<?> field) {
-        return supportsField(field);
-    }
-
-    @Override
-    public synchronized boolean isExact(MatchField<?> field) {
-        OFOxm<?> value = getOxm(field);
-        return (value != null && !value.isMasked());
-    }
-
-    @Override
-    public synchronized boolean isFullyWildcarded(MatchField<?> field) {
-        OFOxm<?> value = getOxm(field);
-        return (value == null);
-    }
-
-    @Override
-    public synchronized boolean isPartiallyMasked(MatchField<?> field) {
-        OFOxm<?> value = getOxm(field);
-        return (value != null && value.isMasked());
-    }
-
-    @Override
-    public synchronized <F extends OFValueType<F>> Match.Builder setExact(
-            MatchField<F> field, F value) {
-        initBuilder();
-        OFOxm<F> oxm = OFFactories.getFactory(OFVersion.OF_13).oxms().fromValue(value, field);
-        this.oxmListBuilder.set(oxm);
-        updateOxmList();
-        return this;
-    }
-
-    @Override
-    public synchronized <F extends OFValueType<F>> Match.Builder setMasked(
-            MatchField<F> field, F value, F mask) {
-        initBuilder();
-        OFOxm<F> oxm = OFFactories.getFactory(OFVersion.OF_13).oxms().fromValueAndMask(value, mask, field);
-        this.oxmListBuilder.set(oxm);
-        updateOxmList();
-        return this;
-    }
-
-    @Override
-    public synchronized <F extends OFValueType<F>> Match.Builder setMasked(
-            MatchField<F> field, Masked<F> valueWithMask) {
-        initBuilder();
-        OFOxm<F> oxm = OFFactories.getFactory(OFVersion.OF_13).oxms().fromMasked(valueWithMask, field);
-        this.oxmListBuilder.set(oxm);
-        updateOxmList();
-        return this;
-    }
-
-    @Override
-    public synchronized <F extends OFValueType<F>> Match.Builder wildcard(MatchField<F> field) {
-        initBuilder();
-        this.oxmListBuilder.unset(field);
-        updateOxmList();
-        return this;
-    }
+//:: include("custom/OFMatchV3.Builder.java", msg=msg, version=version, has_parent=False)