Method setUserData

src/main/java/org/htmlunit/html/DomNode.java:647–653

{@inheritDoc}

(final String key, final Object data, final UserDataHandler handler)

     * {@inheritDoc}
     */
    @Override
    public Object setUserData(final String key, final Object data, final UserDataHandler handler) {
        if (userData_ == null) {
            userData_ = new HashMap<>();
        }
        return userData_.put(key, data);
    }

    /**
     * {@inheritDoc}