public double getRetryDelay() {
        return retryDelay;
    }
<p>Returns the retry request of this reply. This can be set using {@link #setRetryDelay} and is an instruction to
the resender logic of message bus on how to perform the retry. If this value is anything other than a negative
number, it instructs the resender to disregard all configured resending attributes and instead act according to
this value.</p>

@return The retry request.
messagebus/src/main/java/com/yahoo/messagebus/Reply.java