/// <summary>
        /// Creates Xml document
        /// </summary>
        /// <param name="desktop">Desktop</param>
        /// <param name="consumer">Consumer name</param>
        /// <param name="input">Input</param>
        /// <param name="start">Start</param>
        /// <param name="step">Step</param>
        /// <param name="count">Count of steps</param>
        /// <returns>Document</returns>
        static public XmlDocument CreateXmlDocument(this IDesktop desktop, string consumer,
                                                    XmlDocument input, double start, double step, int count)
        {
            IDataConsumer c = desktop.GetObject(consumer) as IDataConsumer;

            return(c.CreateXmlDocument(input, start, step, count));
        }