Method objectKeys

java/lib/src/main/java/io/github/ccxt/Helpers.java:955–962

Snapshot-copy of a Map's keys under the map's intrinsic lock, so concurrent put/remove from a WS-handler thread doesn't IOOBE the iteration. Used by the transpile of `Object.keys(x)` — see post-process in build/javaTranspiler.ts. For non-Map targets returns an empty list (matches JS Object.keys on n

(Object target)

     * For non-Map targets returns an empty list (matches JS Object.keys on non-objects).
     */
    public static List<Object> objectKeys(Object target) {
        if (target instanceof Map<?, ?> m) {
            synchronized (m) {
                return new ArrayList<>(m.keySet());
            }
        }
        return new ArrayList<>();
    }

    /** Same as {@link #objectKeys} but for values — transpile of `Object.values(x)`. */
    public static List<Object> objectValues(Object target) {