[EWS] [EWS-XML] About the LastModifiedTime Element

Question

This page makes it believe that the LastModifiedTime is a named element that I would get back in my Contact through a GetItem or something like that: http://msdn.microsoft.com/en-us/library/office/bb891845(v=exchg.150).aspx
However it appears the only the way to get this field is to ask for it as an extended property using its property tag and type.  Can someone help me  understand what the named element is for?

Answer 1

I am trying this against my Exchange Online account; I did not request for a specific Exchange version. The request and response are as follows:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:xsd="http://www.w3.org/2001/XMLSchema"
   xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" 
   xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
  <soap:Body>
    <m:GetItem>
        <m:ItemShape>
           <t:BaseShape>AllProperties</t:BaseShape>
           <t:AdditionalProperties>
               <!-- Gender -->
               <t:ExtendedFieldURI
                    PropertyType="Short"
                    PropertyTag="14925" />
           </t:AdditionalProperties>
        </m:ItemShape>
        <m:ItemIds>
              <t:ItemId Id="AAAcAHNrYXJyYUBhc3luay5vbm1pY3Jvc29mdC5jb20ARgAAAAAA6tvK38NMgEiPrdzycecYvAcACf/6iQHYvUyNzrlQXzUQNgAAAAABDwAACf/6iQHYvUyNzrlQXzUQNgAAHykxIwAA" />          
        </m:ItemIds>
    </m:GetItem>
  </soap:Body>
</soap:Envelope>
The response looks like:
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Header>
<h:ServerVersionInfo MajorBuildNumber="921" MajorVersion="15" MinorBuildNumber="20" MinorVersion="0" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
</s:Header>
<s:Body xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<m:GetItemResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
<m:ResponseMessages>
<m:GetItemResponseMessage ResponseClass="Success">
<m:ResponseCode>NoError</m:ResponseCode>
<m:Items>
<t:Contact>
<t:ItemId ChangeKey="EQAAABYAAAAJ//qJAdi9TI3OuVBfNRA2AAAfKW4A" Id="AAAcAHNrYXJyYUBhc3luay5vbm1pY3Jvc29mdC5jb20ARgAAAAAA6tvK38NMgEiPrdzycecYvAcACf/6iQHYvUyNzrlQXzUQNgAAAAABDwAACf/6iQHYvUyNzrlQXzUQNgAAHykxIwAA"/>
<t:ParentFolderId ChangeKey="AQAAAA==" Id="AQAcAHNrYXJyAGFAYXN5bmsub25taWNyb3NvZnQuY29tAC4AAAPq28rfw0yASI+t3PJx5xi8AQAJ//qJAdi9TI3OuVBfNRA2AAACAQ8AAAA="/>
<t:ItemClass>IPM.Contact</t:ItemClass>
<t:Subject>Mamata Banerjee - Govt. of West Bengal</t:Subject>
<t:Sensitivity>Normal</t:Sensitivity>
<t:Body BodyType="Text"/>
<t:DateTimeReceived>2014-04-20T12:18:11Z</t:DateTimeReceived>
<t:Size>1206</t:Size>
<t:Importance>Normal</t:Importance>
<t:IsSubmitted>false</t:IsSubmitted>
<t:IsDraft>true</t:IsDraft>
<t:IsFromMe>false</t:IsFromMe>
<t:IsResend>false</t:IsResend>
<t:IsUnmodified>false</t:IsUnmodified>
<t:DateTimeSent>2014-04-20T12:18:11Z</t:DateTimeSent>
<t:DateTimeCreated>2014-04-20T12:18:11Z</t:DateTimeCreated>
<t:DisplayCc/>
<t:DisplayTo/>
<t:HasAttachments>false</t:HasAttachments>
<t:ExtendedProperty>
<t:ExtendedFieldURI PropertyTag="0x3a4d" PropertyType="Short"/>
<t:Value>2</t:Value>
</t:ExtendedProperty>
<t:Culture>en-US</t:Culture>
<t:FileAs/>
<t:FileAsMapping>None</t:FileAsMapping>
<t:DisplayName>Mamata Banerjee</t:DisplayName>
<t:GivenName>Mamata</t:GivenName>
<t:CompleteName>
<t:FirstName>Mamata</t:FirstName>
<t:LastName>Banerjee</t:LastName>
<t:FullName>Mamata Banerjee</t:FullName>
</t:CompleteName>
<t:CompanyName>Govt. of West Bengal</t:CompanyName>
<t:JobTitle>Chief Minister</t:JobTitle>
<t:Surname>Banerjee</t:Surname>
</t:Contact>
</m:Items>
</m:GetItemResponseMessage>
</m:ResponseMessages>
</m:GetItemResponse>
</s:Body>
</s:Envelope>
As you can see there is no LastModifiedTime property in the response.
Thanks for your help, Glen.