public ASN1Encodable getBagAttribute(ASN1ObjectIdentifier oid) {
   return attrCarrier.getBagAttribute(oid);
 }
 public Enumeration getBagAttributeKeys() {
   return attrCarrier.getBagAttributeKeys();
 }
 public void setBagAttribute(ASN1ObjectIdentifier oid, ASN1Encodable attribute) {
   attrCarrier.setBagAttribute(oid, attribute);
 }