Undocumented EWS calls related to Outlook Groups (Creation, Validation, Retrieval)

CreateUnifiedGroup.xml

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
	<s:Header>
		<RequestServerVersion Version="Exchange2015" xmlns="http://schemas.microsoft.com/exchange/services/2006/types"/>
		<MailboxCulture xmlns="http://schemas.microsoft.com/exchange/services/2006/types">en-US</MailboxCulture>
	</s:Header>
	<s:Body>
		<ValidateUnifiedGroupAlias xmlns="http://schemas.microsoft.com/exchange/services/2006/messages">
			<Alias>StrideTest4</Alias>
		</ValidateUnifiedGroupAlias>
	</s:Body>
</s:Envelope>

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
	<s:Header>
		<RequestServerVersion Version="Exchange2015" xmlns="http://schemas.microsoft.com/exchange/services/2006/types"/>
		<MailboxCulture xmlns="http://schemas.microsoft.com/exchange/services/2006/types">en-US</MailboxCulture>
	</s:Header>
	<s:Body>
		<CreateUnifiedGroup xmlns="http://schemas.microsoft.com/exchange/services/2006/messages">
			<Name>StrideTest4</Name>
			<Alias>StrideTest4</Alias>
			<AccessType xmlns="http://schemas.microsoft.com/exchange/services/2006/types">Public</AccessType>
			<Description/>
			<AutoSubscribeNewMembers>false</AutoSubscribeNewMembers>
			<CultureName>en-US</CultureName>
		</CreateUnifiedGroup>
	</s:Body>
</s:Envelope>

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
	<s:Header>
		<RequestServerVersion Version="V2016_01_06" xmlns="http://schemas.microsoft.com/exchange/services/2006/types"/>
		<MailboxCulture xmlns="http://schemas.microsoft.com/exchange/services/2006/types">en-US</MailboxCulture>
	</s:Header>
	<s:Body>
		<GetUnifiedGroupMembers xmlns="http://schemas.microsoft.com/exchange/services/2006/messages">
			<GroupIdentity xmlns="http://schemas.microsoft.com/exchange/services/2006/types">
				<Type>SmtpAddress</Type>
				<Value>StrideTest4@yasoon.com</Value>
			</GroupIdentity>
			<GroupMembersResponseShape xmlns="http://schemas.microsoft.com/exchange/services/2006/types">Members</GroupMembersResponseShape>
			<MembersPaging a:type="IndexedPageFolderView" MaxEntriesReturned="500" Offset="0" BasePoint="Beginning" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:a="http://www.w3.org/2001/XMLSchema-instance"/>
			<MembersSortOrder xmlns="http://schemas.microsoft.com/exchange/services/2006/types">OwnerAndDisplayName</MembersSortOrder>
		</GetUnifiedGroupMembers>
	</s:Body>
</s:Envelope>

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
	<s:Header>
		<RequestServerVersion Version="Exchange2015" xmlns="http://schemas.microsoft.com/exchange/services/2006/types"/>
		<MailboxCulture xmlns="http://schemas.microsoft.com/exchange/services/2006/types">en-US</MailboxCulture>
	</s:Header>
	<s:Body>
		<a:GetUserUnifiedGroups xmlns="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:a="http://schemas.microsoft.com/exchange/services/2006/messages">
			<a:RequestedGroupsSets>
				<RequestedUnifiedGroupsSet>
					<FilterType>All</FilterType>
					<SortType>DisplayName</SortType>
					<SortDirection>Descending</SortDirection>
					<GroupsLimit>1000</GroupsLimit>
				</RequestedUnifiedGroupsSet>
			</a:RequestedGroupsSets>
		</a:GetUserUnifiedGroups>
	</s:Body>
</s:Envelope>