code: public void marshall(UpdateFlowSourceRequest updateFlowSourceRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (updateFlowSourceRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(updateFlowSourceRequest.getDecryption(), DECRYPTION_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getEntitlementArn(), ENTITLEMENTARN_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getFlowArn(), FLOWARN_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getIngestPort(), INGESTPORT_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getMaxBitrate(), MAXBITRATE_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getMaxLatency(), MAXLATENCY_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getProtocol(), PROTOCOL_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getSourceArn(), SOURCEARN_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getStreamId(), STREAMID_BINDING);
              protocolMarshaller.marshall(updateFlowSourceRequest.getWhitelistCidr(), WHITELISTCIDR_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.