* @throws CIFSException if connection fails
     *
     */
    synchronized SmbTreeHandleImpl ensureTreeConnected() throws CIFSException {
        // Optimization: Check connection validity more efficiently
        if (this.treeHandle != null && this.treeHandle.isConnected()) {
            // Connection is still valid - reuse it
            return this.treeHandle.acquire();
        }

    }

    /**
     * List the contents of this SMB resource as an array of
     * <code>SmbFile</code> objects. This method is much more efficient than
     * the regular <code>list</code> method when querying attributes of each
     * file in the result set.
     * <p>
     * The list of <code>SmbFile</code>s returned by this method will be;
     *