/// <summary>
        /// Internal import method with an explicit context node.
        /// </summary>
        ///
        /// <param name="stream">The stream for reading the INFO content.</param>
        /// <param name="ctx">The node currently being populated.</param>
        /// <returns>The ctx.</returns>
        private BoostInfoTree read(TextReader stream, BoostInfoTree ctx)
        {
            String line = null;
            while ((line = stream.readLine()) != null)
                ctx = parseLine(line.trim(), ctx);

            return ctx;
        }