protected static void mapCallDetails(Collection<Message> attachmentMessages, Message aggregatedMessage, String uuId) {
Set<EPR> replyToEPRs = new HashSet<EPR>();
int eprCount = 0;
for (Message attachmentMessage : attachmentMessages) {
Header header = attachmentMessage.getHeader();
if(header != null) {
Call call = header.getCall();
if(call != null) {
replyToEPRs.add(call.getReplyTo());
eprCount++;
}
}