weld/subsystem/src/main/java/org/jboss/as/weld/WeldSubsystemAdd.java
private boolean checkJtsEnabled(final OperationContext context) {
        try {
            final ModelNode jtsNode = context.readResourceFromRoot(PathAddress.pathAddress("subsystem", "transactions"), false)
                    .getModel().get("jts");
            return jtsNode.isDefined() ? jtsNode.asBoolean() : false;
        } catch (NoSuchResourceException ex) {
            return false;
        }
    }
private boolean checkJtsEnabled(final OperationContext context) {
        try {
            final ModelNode jtsNode = context.readResourceFromRoot(PathAddress.pathAddress("subsystem", "transactions"), false)
                    .getModel().get("jts");
            return jtsNode.isDefined() ? jtsNode.asBoolean() : false;
        } catch (NoSuchResourceException ex) {
            return false;
        }
    }
not necessary.