private void addClassToDeployedUnit(Class deploymentClass, DeployedUnitImpl deployedUnit) {
   if (deploymentClass != null) {
     DeploymentUnit unit = deployedUnit.getDeploymentUnit();
     Boolean limitClasses = false;
     if (unit != null) {
       DeploymentDescriptor depDesc = ((KModuleDeploymentUnit) unit).getDeploymentDescriptor();
       if (depDesc != null) {
         limitClasses = depDesc.getLimitSerializationClasses();
       }
     }
     if (limitClasses != null && limitClasses) {
       filterClassesAddedToDeployedUnit(deployedUnit, deploymentClass);
     } else {
       logger.debug(
           "Loaded {} onto the classpath from deployment {}",
           deploymentClass.getName(),
           unit.getIdentifier());
       deployedUnit.addClass(deploymentClass);
     }
   }
 }
  /**
   * This method is used to filter classes that are added to the {@link DeployedUnit}. When this
   * method is used, only classes that are meant to be used with serialization are added to the
   * deployment. This feature can be used to, for example, make sure that
   * non-serialization-compatible classes (such as interfaces), do not complicate the use of a
   * deployment with the remote services (REST/JMS/WS). Note to other developers, it's possible that
   * classpath problems may arise, because of either classloader or lazy class resolution problems:
   * I simply don't know enough about the inner workings of the JAXB implementations (plural!) to
   * figure this out.
   *
   * @param deployedUnit The {@link DeployedUnit} to which the classes are added. The {@link
   *     DeployedUnit} to which the classes are added. The {@link DeployedUnit} to which the classes
   *     are added.
   * @param classToAdd The class to add to the {@link DeployedUnit}.
   */
  private static void filterClassesAddedToDeployedUnit(
      DeployedUnit deployedUnit, Class classToAdd) {

    if (classToAdd.isInterface()
        || classToAdd.isAnnotation()
        || classToAdd.isLocalClass()
        || classToAdd.isMemberClass()) {
      return;
    }

    boolean jaxbClass = false;
    boolean remoteableClass = false;
    // @XmlRootElement and @XmlType may be used with inheritance
    for (Annotation anno : classToAdd.getAnnotations()) {
      if (XmlRootElement.class.equals(anno.annotationType())) {
        jaxbClass = true;
        break;
      }
      if (XmlType.class.equals(anno.annotationType())) {
        jaxbClass = true;
        break;
      }
    }
    // @Remotable is not inheritable, and may not be used as such
    for (Annotation anno : classToAdd.getDeclaredAnnotations()) {
      if (Remotable.class.equals(anno.annotationType())) {
        remoteableClass = true;
        break;
      }
    }

    if (jaxbClass || remoteableClass) {
      DeployedUnitImpl deployedUnitImpl = (DeployedUnitImpl) deployedUnit;
      deployedUnitImpl.addClass(classToAdd);
    }
  }