private void sleep() {
        try {
            TimeUnit.MILLISECONDS.sleep(this.delay);
        } catch (final InterruptedException ex) {
            Thread.currentThread().interrupt();
            throw new IllegalStateException(
                "Unexpected interruption while retrying to process request",
                ex
            );
        }
    }
private void sleep ( ) { try { TimeUnit . MILLISECONDS . sleep ( this . delay ) ; } catch ( final InterruptedException ex ) { Thread . currentThread ( ) . interrupt ( ) ; throw new IllegalStateException ( "Unexpected interruption while retrying to process request" , ex ) ; } }
Sleep.