/// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="type">Command part type.</param>
        /// <param name="data">Command data.</param>
        /// <exception cref="ArgumentNullException">Is raised when <b>data</b> is null reference.</exception>
        public IMAP_Client_CmdPart(IMAP_Client_CmdPart_Type type,string data)
        {
            if(data == null){
                throw new ArgumentNullException("data");
            }

            m_Type  = type;
            m_Value = data;
        }
        /// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="type">Command part type.</param>
        /// <param name="data">Command data.</param>
        /// <exception cref="ArgumentNullException">Is raised when <b>data</b> is null reference.</exception>
        public IMAP_Client_CmdPart(IMAP_Client_CmdPart_Type type, string data)
        {
            if (data == null)
            {
                throw new ArgumentNullException("data");
            }

            m_Type  = type;
            m_Value = data;
        }