public SecurityAuditEntry(string id, SecurityAuditType auditType, string ipAddress="")
 {
     Guard.ArgumentNotNullOrEmpty(id, "id");
     this.Id = id;
     this.AuditType = auditType;
     this.IPAddress = ipAddress;
 }
 public SecurityAuditEntry(string id, SecurityAuditType auditType, string ipAddress = "")
 {
     Guard.ArgumentNotNullOrEmpty(id, "id");
     this.Id        = id;
     this.AuditType = auditType;
     this.IPAddress = ipAddress;
 }