interface IICCCGrdmICCCCred {
  method getCred(out uint32 ret, in uint32 type, out buffer value, in buffer caller_ta_name);
  method storeCred(out uint32 ret, in uint32 type, in buffer value, in buffer caller_ta_name);
  method deleteCred(out uint32 ret, in uint32 type, in buffer caller_ta_name);
};