public void setOpenContainer(Object container) {
        openContainer = container;
        if (container instanceof Closeable) {
            tmp.addResource((Closeable) container);
        }
    }
Stores the open container object against
the stream, eg after a Zip contents
detector has loaded the file to decide
what it contains.
tika-core/src/main/java/org/apache/tika/io/TikaInputStream.java