docs: public void marshall(Node node, ProtocolMarshaller protocolMarshaller) {
  
          if (node == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(node.getNodeId(), NODEID_BINDING);
              protocolMarshaller.marshall(node.getEndpoint(), ENDPOINT_BINDING);
              protocolMarshaller.marshall(node.getNodeCreateTime(), NODECREATETIME_BINDING);
              protocolMarshaller.marshall(node.getAvailabilityZone(), AVAILABILITYZONE_BINDING);
              protocolMarshaller.marshall(node.getNodeStatus(), NODESTATUS_BINDING);
              protocolMarshaller.marshall(node.getParameterGroupStatus(), PARAMETERGROUPSTATUS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }