@Override
    public void setAuditXPath(boolean auditXPath) {
        this.auditXPath = auditXPath;
        JiveGlobals.setProperty("xmpp.audit.xpath", Boolean.toString(auditXPath));
    }
the time between successive executions of the task that will save
the queued audited packets to a permanent store.
xmppserver/src/main/java/org/jivesoftware/openfire/audit/spi/AuditManagerImpl.java