Method of

src/main/java/groovy/concurrent/Awaitable.java:344–344

Returns an already-completed Awaitable with the given value. Useful for returning a pre-computed result from an API that requires an Awaitable return type. @param value the result value (may be null) @param the result type @return a completed awaitable

(T value)

     * @return a completed awaitable
     */
    static <T> Awaitable<T> of(T value) {
        return new GroovyPromise<>(CompletableFuture.completedFuture(value));
    }