void setReplyPolicy(ItemReplyPolicy replyPolicy) {
        this.replyPolicy = replyPolicy;
    }
Sets whether event notifications will include payloads. Payloads are included when
publishing new items. However, new items may not always include a payload depending
on the node configuration. Nodes can be configured to not deliver payloads for performance
reasons.

@param deliverPayloads true if event notifications will include payloads.
xmppserver/src/main/java/org/jivesoftware/openfire/pubsub/Node.java