Inheritance: System.Web.Services.Protocols.SoapHeader
        /// <summary>
        /// Configure the SOAP header before calling operations.
        /// </summary>
        protected void ConfigureSOAPHeader()
        {
            // Set the value of MailboxCulture.
            MailboxCultureType mailboxCulture = new MailboxCultureType();
            string culture = Common.GetConfigurationPropertyValue("MailboxCulture", this.Site);
            mailboxCulture.Value = culture;

            // Set the value of ExchangeImpersonation.
            ExchangeImpersonationType impersonation = new ExchangeImpersonationType();
            impersonation.ConnectingSID = new ConnectingSIDType();
            PrimarySmtpAddressType address = new PrimarySmtpAddressType();
            address.Value = Common.GetConfigurationPropertyValue("User1Name", this.Site) + "@" + Common.GetConfigurationPropertyValue("Domain", this.Site);
            impersonation.ConnectingSID.Item = address;

            // Set time zone value.
            TimeZoneDefinitionType timezoneDefin = new TimeZoneDefinitionType();
            timezoneDefin.Id = "Eastern Standard Time";
            TimeZoneContextType timezoneContext = new TimeZoneContextType();
            timezoneContext.TimeZoneDefinition = timezoneDefin;

            Dictionary<string, object> headerValues = new Dictionary<string, object>();
            headerValues.Add("MailboxCulture", mailboxCulture);
            headerValues.Add("ExchangeImpersonation", impersonation);
            headerValues.Add("TimeZoneContext", timezoneContext);
            this.FOLDAdapter.ConfigureSOAPHeader(headerValues);
        }