Streamable holder = holderFactory.createHolder(content);
Streamable holder = HolderLocator.createHolder(content);
  public void from_any(Any an_any)                throws TypeMismatch, InvalidValue  {    checkType(official_type, an_any.type());    try      {        if (!an_any.type().content_type().equal(content))          throw new InvalidValue(CONTENT);      }    catch (BadKind e)      {        TypeMismatch t = new TypeMismatch("Not a box");        t.initCause(e);        throw t;      }    Serializable s = an_any.extract_Value();    if (s == null)      set_to_null();    else      {        try          {            Streamable holder = holderFactory.createHolder(content);            Field v = holder.getClass().getField("value");            v.set(holder, s);            Any cont = createAny();            cont.insert_Streamable(holder);            array = new DynAny[] { factory.create_dyn_any(cont) };          }        catch (Exception ex)          {            throw new Unexpected(ex);          }      }    valueChanged();  }