code: public void marshall(FileSystem fileSystem, ProtocolMarshaller protocolMarshaller) {
  
          if (fileSystem == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(fileSystem.getOwnerId(), OWNERID_BINDING);
              protocolMarshaller.marshall(fileSystem.getCreationTime(), CREATIONTIME_BINDING);
              protocolMarshaller.marshall(fileSystem.getFileSystemId(), FILESYSTEMID_BINDING);
              protocolMarshaller.marshall(fileSystem.getFileSystemType(), FILESYSTEMTYPE_BINDING);
              protocolMarshaller.marshall(fileSystem.getLifecycle(), LIFECYCLE_BINDING);
              protocolMarshaller.marshall(fileSystem.getFailureDetails(), FAILUREDETAILS_BINDING);
              protocolMarshaller.marshall(fileSystem.getStorageCapacity(), STORAGECAPACITY_BINDING);
              protocolMarshaller.marshall(fileSystem.getVpcId(), VPCID_BINDING);
              protocolMarshaller.marshall(fileSystem.getSubnetIds(), SUBNETIDS_BINDING);
              protocolMarshaller.marshall(fileSystem.getNetworkInterfaceIds(), NETWORKINTERFACEIDS_BINDING);
              protocolMarshaller.marshall(fileSystem.getDNSName(), DNSNAME_BINDING);
              protocolMarshaller.marshall(fileSystem.getKmsKeyId(), KMSKEYID_BINDING);
              protocolMarshaller.marshall(fileSystem.getResourceARN(), RESOURCEARN_BINDING);
              protocolMarshaller.marshall(fileSystem.getTags(), TAGS_BINDING);
              protocolMarshaller.marshall(fileSystem.getWindowsConfiguration(), WINDOWSCONFIGURATION_BINDING);
              protocolMarshaller.marshall(fileSystem.getLustreConfiguration(), LUSTRECONFIGURATION_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.