Method snapshot

java/lib/src/main/java/io/github/ccxt/ws/ArrayCache.java:38–40

Stable snapshot for readers — taken under the same monitor as append(), so consumers can iterate without racing the WS thread.

()

     * so consumers can iterate without racing the WS thread.
     */
    public synchronized List<Object> snapshot() {
        return new ArrayList<>(this);
    }

    @Override
    public synchronized Object[] toArray() {