docs: public void marshall(SendEmailRequest sendEmailRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (sendEmailRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(sendEmailRequest.getFromEmailAddress(), FROMEMAILADDRESS_BINDING);
              protocolMarshaller.marshall(sendEmailRequest.getDestination(), DESTINATION_BINDING);
              protocolMarshaller.marshall(sendEmailRequest.getReplyToAddresses(), REPLYTOADDRESSES_BINDING);
              protocolMarshaller.marshall(sendEmailRequest.getFeedbackForwardingEmailAddress(), FEEDBACKFORWARDINGEMAILADDRESS_BINDING);
              protocolMarshaller.marshall(sendEmailRequest.getContent(), CONTENT_BINDING);
              protocolMarshaller.marshall(sendEmailRequest.getEmailTags(), EMAILTAGS_BINDING);
              protocolMarshaller.marshall(sendEmailRequest.getConfigurationSetName(), CONFIGURATIONSETNAME_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }