@Override
    public String toString() {
        return new StringJoiner(", ", TestType.class.getSimpleName() + "[", "]")
                       .add("value='" + value + "'")
                       .add("name='" + name + "'")
                       .add("endpoint='" + endpoint + "'")
                       .add("delay=" + delay)
                       .add("skipStorage='" + skipStorage + "'")
                       .add("maxRetries=" + maxRetries)
                       .add("retryDelay=" + retryDelay)
                       .toString();
    }
@param delay the delay to set
test/common/src/main/java/io/apiman/test/common/plan/TestType.java