在XPages Domino Java中回收Item对象

I have some code:

我有一些代码：

Document doc = view.getFirstDocument();
Item item = null;

if (null != admin.getManagers())
{
    doc.replaceItemValue("Managers", admin.getManagers());
    item = doc.getFirstItem("Managers");
    item.setNames(true);
} 
else
{
    doc.replaceItemValue("Managers", "");
}

// Load the workers and set them as Names fields
if (null != admin.getWorkers())
{
    doc.replaceItemValue("Workers", admin.getWorkers());
    item = doc.getFirstItem("Workers");
    item.setNames(true);
} 
else
{
    doc.replaceItemValue("Workers", "");
}
Document doc = vi