code: private void addPostParams(final Request request) {
          if (friendlyName != null) {
              request.addPostParam("FriendlyName", friendlyName);
          }
  
          if (voiceFallbackMethod != null) {
              request.addPostParam("VoiceFallbackMethod", voiceFallbackMethod.toString());
          }
  
          if (voiceFallbackUrl != null) {
              request.addPostParam("VoiceFallbackUrl", voiceFallbackUrl.toString());
          }
  
          if (voiceMethod != null) {
              request.addPostParam("VoiceMethod", voiceMethod.toString());
          }
  
          if (voiceStatusCallbackMethod != null) {
              request.addPostParam("VoiceStatusCallbackMethod", voiceStatusCallbackMethod.toString());
          }
  
          if (voiceStatusCallbackUrl != null) {
              request.addPostParam("VoiceStatusCallbackUrl", voiceStatusCallbackUrl.toString());
          }
  
          if (voiceUrl != null) {
              request.addPostParam("VoiceUrl", voiceUrl.toString());
          }
  
          if (sipRegistration != null) {
              request.addPostParam("SipRegistration", sipRegistration.toString());
          }
  
          if (domainName != null) {
              request.addPostParam("DomainName", domainName);
          }
      }
docs: Add the requested post parameters to the Request.
  
  @param request Request to add post params to