public DelayedConnectionLevelRetryHandler build() {
            return new DelayedConnectionLevelRetryHandler(delaySupplier, maxRetries, predicate, retryConsumer, retryFailedConsumer, sleeper);
        }
A {@link HttpRequestRetryHandler} that supports delayed retries.

@author bjorncs
http-utils/src/main/java/ai/vespa/util/http/hc4/retry/DelayedConnectionLevelRetryHandler.java