/// <summary>
        /// Gets first version.
        /// </summary>
        /// <returns>Instance of <see cref="IVersion"/>.</returns>
        public IVersion GetRootVersion()
        {
            string command =
                @"SELECT VersionId, ItemId, VersionNumber, Name, Created, SerialNumber
                  FROM Version
                  WHERE ItemId = @ItemId AND VersionNumber =
                                   (SELECT MIN(VersionNumber) FROM Version WHERE ItemId = @ItemId)";

            return context.ExecuteVersion(
                path.Remove(path.IndexOf('?')),
                command,
                "@ItemId", itemId).FirstOrDefault();
        }