/** @return invitation status text with date. */
public String getInvitationStatusText() {
String key = registration.getInvitation().getInvitationStatus().getKey() + ".with.date";
String[] args = {dateFormat.format(registration.getInvitation().getInvitationChangeDate())};
return action.getText(key, args);
}
/** @return the invitation status object. */
public InvitationStatus getInvitationStatus() {
return registration.getInvitation().getInvitationStatus();
}