code: public void marshall(OrderableReplicationInstance orderableReplicationInstance, ProtocolMarshaller protocolMarshaller) {
  
          if (orderableReplicationInstance == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(orderableReplicationInstance.getEngineVersion(), ENGINEVERSION_BINDING);
              protocolMarshaller.marshall(orderableReplicationInstance.getReplicationInstanceClass(), REPLICATIONINSTANCECLASS_BINDING);
              protocolMarshaller.marshall(orderableReplicationInstance.getStorageType(), STORAGETYPE_BINDING);
              protocolMarshaller.marshall(orderableReplicationInstance.getMinAllocatedStorage(), MINALLOCATEDSTORAGE_BINDING);
              protocolMarshaller.marshall(orderableReplicationInstance.getMaxAllocatedStorage(), MAXALLOCATEDSTORAGE_BINDING);
              protocolMarshaller.marshall(orderableReplicationInstance.getDefaultAllocatedStorage(), DEFAULTALLOCATEDSTORAGE_BINDING);
              protocolMarshaller.marshall(orderableReplicationInstance.getIncludedAllocatedStorage(), INCLUDEDALLOCATEDSTORAGE_BINDING);
              protocolMarshaller.marshall(orderableReplicationInstance.getAvailabilityZones(), AVAILABILITYZONES_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.