Method makeReadOnly

src/main/java/com/amazon/ion/IonValue.java:423–423

Marks this instance and its children to be immutable. In addition, read-only values are safe for simultaneous use from multiple threads. This may require materializing the Java forms of the values. After this method completes, any attempt to change the state of this instance, or of any containe

()

     * @see #isReadOnly()
     */
    public void makeReadOnly();


    /**