docs: public void marshall(GetDocumentVersionRequest getDocumentVersionRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (getDocumentVersionRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(getDocumentVersionRequest.getAuthenticationToken(), AUTHENTICATIONTOKEN_BINDING);
              protocolMarshaller.marshall(getDocumentVersionRequest.getDocumentId(), DOCUMENTID_BINDING);
              protocolMarshaller.marshall(getDocumentVersionRequest.getVersionId(), VERSIONID_BINDING);
              protocolMarshaller.marshall(getDocumentVersionRequest.getFields(), FIELDS_BINDING);
              protocolMarshaller.marshall(getDocumentVersionRequest.getIncludeCustomMetadata(), INCLUDECUSTOMMETADATA_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }