public Object readObject(final ObjectDataInput in) {
   try {
     final boolean isNull = in.readBoolean();
     if (isNull) {
       return null;
     }
     final int typeId = in.readInt();
     final SerializerAdapter serializer = serializerFor(typeId);
     if (serializer == null) {
       if (active) {
         throw new HazelcastSerializationException(
             "There is no suitable de-serializer for type " + typeId);
       }
       throw new HazelcastInstanceNotActiveException();
     }
     if (typeId == SerializationConstants.CONSTANT_TYPE_PORTABLE
         && in instanceof PortableContextAwareInputStream) {
       ClassDefinition classDefinition = new ClassDefinitionImpl();
       classDefinition.readData(in);
       classDefinition = serializationContext.registerClassDefinition(classDefinition);
       PortableContextAwareInputStream ctxIn = (PortableContextAwareInputStream) in;
       ctxIn.setClassDefinition(classDefinition);
     }
     Object obj = serializer.read(in);
     if (managedContext != null) {
       obj = managedContext.initialize(obj);
     }
     return obj;
   } catch (Throwable e) {
     handleException(e);
   }
   return null;
 }
  public <T> T toObject(final Object object) {
    if (!(object instanceof Data)) {
      return (T) object;
    }

    Data data = (Data) object;

    if (data.bufferSize() == 0 && data.isDataSerializable()) {
      return null;
    }
    try {
      final int typeId = data.type;
      final SerializerAdapter serializer = serializerFor(typeId);
      if (serializer == null) {
        if (active) {
          throw new HazelcastSerializationException(
              "There is no suitable de-serializer for type " + typeId);
        }
        throw new HazelcastInstanceNotActiveException();
      }
      if (typeId == SerializationConstants.CONSTANT_TYPE_PORTABLE) {
        serializationContext.registerClassDefinition(data.classDefinition);
      }
      Object obj = serializer.read(data);
      if (managedContext != null) {
        obj = managedContext.initialize(obj);
      }
      return (T) obj;
    } catch (Throwable e) {
      handleException(e);
    }
    return null;
  }