code: @Override
      public DeleteCustomerGatewayResult deleteCustomerGateway(DeleteCustomerGatewayRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteCustomerGateway(request);
      }
docs: <p>
  Deletes the specified customer gateway. You must delete the VPN connection before you can delete the customer
  gateway.
  </p>
  
  @param deleteCustomerGatewayRequest
  Contains the parameters for DeleteCustomerGateway.
  @return Result of the DeleteCustomerGateway operation returned by the service.
  @sample AmazonEC2.DeleteCustomerGateway
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DeleteCustomerGateway" target="_top">AWS API
  Documentation</a>