message: billing - detach PM with operation result
diff: @@ -23,7 +23,6 @@ import TenantComponents from '../../../../types/TenantComponents';
  import User from '../../../../types/User';
  import UserStorage from '../../../../storage/mongodb/UserStorage';
  import UtilsService from './UtilsService';
  -import fs from 'fs';
  const MODULE_NAME = 'BillingService';
  @@ -625,7 +624,7 @@ export default class BillingService {
  UtilsService.assertObjectExists(action, user, `User ID '${userID}' does not exist`,
  MODULE_NAME, 'handleBillingDeletePaymentMethod', req.user);
  // Invoke the billing implementation
  - await billingImpl.deletePaymentMethod(user, filteredRequest.paymentMethodId);
  + const operationResult: BillingOperationResult = await billingImpl.deletePaymentMethod(user, filteredRequest.paymentMethodId);
  // Log
  await Logging.logSecurityInfo({
  tenantID: req.user.tenantID,
  @@ -634,7 +633,7 @@ export default class BillingService {
  action: action
  });
  // Ok
  - res.json(Constants.REST_RESPONSE_SUCCESS);
  + res.json(operationResult);
  next();
  }
  