public static String stellaRelationStringifiedSource(Relation self) {
    { Surrogate testValue000 = Stella_Object.safePrimaryType(self);

      if (Surrogate.subtypeOfClassP(testValue000)) {
        { Stella_Class self000 = ((Stella_Class)(self));

          return (self000.classStringifiedSource);
        }
      }
      else if (Surrogate.subtypeOfMethodSlotP(testValue000)) {
        { MethodSlot self000 = ((MethodSlot)(self));

          return (self000.methodStringifiedSource);
        }
      }
      else {
        return (null);
      }
    }
  }