public void setRequestTTLSeconds(Integer requestTTLSeconds) {
        this.requestTTLSeconds = requestTTLSeconds;
    }
<p>
Maximum age in seconds a request can be in the queue before it is marked as expired. The default is 6 hours, or
21,600 seconds.
</p>

@param requestTTLSeconds
       Maximum age in seconds a request can be in the queue before it is marked as expired. The default is 6
       hours, or 21,600 seconds.
aws-java-sdk-sagemakerruntime/src/main/java/com/amazonaws/services/sagemakerruntime/model/InvokeEndpointAsyncRequest.java