*
* @return the <tt>MessageBuildSubject</tt> with the appropriate fields
* and functions for the message builder
*/
public MessageBuildSubject<R> start() {
final Sendable sendable = new MessageReplySendable() {
boolean reply = false;
@Override
public MessageBuildSendable repliesToSubject(String subjectName) {
message.set(MessageParts.ReplyTo, subjectName);