[MSGraph] fix group member polymophism and add count variable for list

[VeryEarly]

Description

Checklist

• Check this box to confirm: I have read the Submitting Changes section of CONTRIBUTING.md and reviewed the following information:

• SHOULD select appropriate branch. Cmdlets from Autorest.PowerShell should go to generation branch.
• SHOULD make the title of PR clear and informative, and in the present imperative tense.
• SHOULD update ChangeLog.md file(s) appropriately
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header in the past tense. Add changelog in description section if PR goes into generation branch.
  • Should not change ChangeLog.md if no new release is required, such as fixing test case only.
• SHOULD have approved design review for the changes in this repository (Microsoft internal only) with following situations
  • Create new module from scratch
  • Create new resource types which are not easy to conform to Azure PowerShell Design Guidelines
  • Create new resource type which name doesn't use module name as prefix
  • Have design question before implementation
• SHOULD regenerate markdown help files if there is cmdlet API change. Instruction
• SHOULD have proper test coverage for changes in pull request.
• SHOULD NOT introduce breaking changes in Az minor release except preview version.
• SHOULD NOT adjust version of module manually in pull request

[azure-client-tools-bot-prd]

️✔️Az.Accounts

️✔️Build

️✔️PowerShell Core - Windows

⚠️Az.Resources

️✔️Build

️✔️PowerShell Core - Windows

️✔️Breaking Change Check

️✔️PowerShell Core - Windows

⚠️Signature Check

⚠️PowerShell Core - Windows

Type	Cmdlet	Description	Remediation
⚠️	Get-AzADOrganization	Get-AzADOrganization Changes the ConfirmImpact but does not set the SupportsShouldProcess property to true in the cmdlet attribute.	Determine if the cmdlet should implement ShouldProcess and if so determine if it should implement Force / ShouldContinue
⚠️	Get-AzADOrganization	Get-AzADOrganization changes the confirm impact. Please ensure that the change in ConfirmImpact is justified	Verify that ConfirmImpact is changed appropriately by the cmdlet. It is very rare for a cmdlet to change the ConfirmImpact.

⚠️Help Example Check

⚠️PowerShell Core - Windows

Type	Cmdlet	Example	Line	RuleName	Description	Extent	Remediation
⚠️		1	1	Unassigned_Variable	Get-AzADGroup -DisplayName $gname is a null-valued parameter value.	-DisplayName	Assign value for $gname.
⚠️		1	3	Unassigned_Variable	Get-AzADUser -DisplayName $uname is a null-valued parameter value.	-DisplayName	Assign value for $uname.
⚠️		1	4	Unassigned_Variable	Get-AzADServicePrincipal -ApplicationId $appid is a null-valued parameter value.	-ApplicationId	Assign value for $appid.
⚠️		1	1	Unassigned_Variable	Get-AzADAppCredential -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Get-AzADApplication -ObjectId $app is a null-valued parameter value.	-ObjectId	Assign value for $app.
⚠️		2	1	Unassigned_Variable	Get-AzADAppFederatedCredential -ApplicationObjectId $appObjectId is a null-valued parameter value.	-ApplicationObjectId	Assign value for $appObjectId.
⚠️		2	1	Unassigned_Variable	Get-AzADAppFederatedCredential -FederatedCredentialId $credentialId is a null-valued parameter value.	-FederatedCredentialId	Assign value for $credentialId.
⚠️		1	1	Unassigned_Variable	Get-AzADApplication -DisplayName $appname is a null-valued parameter value.	-DisplayName	Assign value for $appname.
⚠️		3	1	Unassigned_Variable	Get-AzADApplication -DisplayNameStartsWith $prefix is a null-valued parameter value.	-DisplayNameStartsWith	Assign value for $prefix.
⚠️		4	1	Unassigned_Variable	Get-AzADApplication -ObjectId $id is a null-valued parameter value.	-ObjectId	Assign value for $id.
⚠️		1	1	Unassigned_Variable	Get-AzADGroup -DisplayName $gname is a null-valued parameter value.	-DisplayName	Assign value for $gname.
⚠️		3	1	Unassigned_Variable	Get-AzADGroup -ObjectId $id is a null-valued parameter value.	-ObjectId	Assign value for $id.
⚠️		1	1	Unassigned_Variable	Get-AzADGroupMember -GroupDisplayName $name is a null-valued parameter value.	-GroupDisplayName	Assign value for $name.
⚠️		2	1	Unassigned_Variable	Get-AzADGroup -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Get-AzADServicePrincipal -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		2	1	Unassigned_Variable	Get-AzADServicePrincipal -DisplayNameStartsWith $prefix is a null-valued parameter value.	-DisplayNameStartsWith	Assign value for $prefix.
⚠️		4	1	Unassigned_Variable	Get-AzADServicePrincipal -ApplicationId $appId is a null-valued parameter value.	-ApplicationId	Assign value for $appId.
⚠️		5	1	Unassigned_Variable	Get-AzADApplication -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Get-AzADSpCredential -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		3	1	Unassigned_Variable	Get-AzADUser -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		2	2	Unassigned_Variable	Get-AzADApplication -ApplicationId $appId is a null-valued parameter value.	-ApplicationId	Assign value for $appId.
⚠️		2	2	Unassigned_Variable	New-AzADAppCredential -StartDate $startDate is a null-valued parameter value.	-StartDate	Assign value for $startDate.
⚠️		2	2	Unassigned_Variable	New-AzADAppCredential -EndDate $endDate is a null-valued parameter value.	-EndDate	Assign value for $endDate.
⚠️		1	1	Unassigned_Variable	New-AzADGroup -DisplayName $gname is a null-valued parameter value.	-DisplayName	Assign value for $gname.
⚠️		1	1	Unassigned_Variable	New-AzADGroup -MailNickname $nickname is a null-valued parameter value.	-MailNickname	Assign value for $nickname.
⚠️		2	1	Unassigned_Variable	New-AzADServicePrincipal -ApplicationId $appid is a null-valued parameter value.	-ApplicationId	Assign value for $appid.
⚠️		3	1	Unassigned_Variable	New-AzADServicePrincipal -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	6	Unassigned_Variable	New-AzADSpCredential -ObjectId $Id is a null-valued parameter value.	-ObjectId	Assign value for $Id.
⚠️		2	1	Unassigned_Variable	Get-AzADServicePrincipal -ApplicationId $appId is a null-valued parameter value.	-ApplicationId	Assign value for $appId.
⚠️		2	1	Unassigned_Variable	New-AzADSpCredential -StartDate $startDate is a null-valued parameter value.	-StartDate	Assign value for $startDate.
⚠️		2	1	Unassigned_Variable	New-AzADSpCredential -EndDate $endDate is a null-valued parameter value.	-EndDate	Assign value for $endDate.
⚠️		1	3	Unassigned_Variable	New-AzADUser -DisplayName $uname is a null-valued parameter value.	-DisplayName	Assign value for $uname.
⚠️		1	3	Unassigned_Variable	New-AzADUser -MailNickname $nickname is a null-valued parameter value.	-MailNickname	Assign value for $nickname.
⚠️		1	3	Unassigned_Variable	New-AzADUser -UserPrincipalName $upn is a null-valued parameter value.	-UserPrincipalName	Assign value for $upn.
⚠️		2	2	Mismatched_Parameter_Value_Type	ConvertTo-SecureString -[-String] $password is not an expected parameter value type.	$password	Use correct parameter value type. Expected Type is string. Now the type is securestring.(Command).
⚠️		2	3	Unassigned_Variable	New-AzADUser -DisplayName $uname is a null-valued parameter value.	-DisplayName	Assign value for $uname.
⚠️		2	3	Unassigned_Variable	New-AzADUser -MailNickname $nickname is a null-valued parameter value.	-MailNickname	Assign value for $nickname.
⚠️		2	3	Unassigned_Variable	New-AzADUser -UserPrincipalName $upn is a null-valued parameter value.	-UserPrincipalName	Assign value for $upn.
⚠️		1	1	Unassigned_Variable	Remove-AzADAppCredential -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Remove-AzADAppCredential -KeyId $keyid is a null-valued parameter value.	-KeyId	Assign value for $keyid.
⚠️		2	1	Unassigned_Variable	Get-AzADApplication -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Remove-AzADApplication -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		2	1	Unassigned_Variable	Get-AzADApplication -ObjectId $id is a null-valued parameter value.	-ObjectId	Assign value for $id.
⚠️		1	1	Unassigned_Variable	Remove-AzADGroup -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		2	1	Unassigned_Variable	Get-AzADGroup -ObjectId $id is a null-valued parameter value.	-ObjectId	Assign value for $id.
⚠️		1	2	Unassigned_Variable	Get-AzADUser -DisplayName $uname is a null-valued parameter value.	-DisplayName	Assign value for $uname.
⚠️		1	3	Unassigned_Variable	Get-AzADServicePrincipal -ApplicationId $appid is a null-valued parameter value.	-ApplicationId	Assign value for $appid.
⚠️		1	4	Unassigned_Variable	Get-AzADGroupMember -GroupDisplayName $gname is a null-valued parameter value.	-GroupDisplayName	Assign value for $gname.
⚠️		1	4	Unassigned_Variable	Remove-AzADGroupMember -MemberObjectId $member is a null-valued parameter value.	-MemberObjectId	Assign value for $member.
⚠️		1	1	Unassigned_Variable	Remove-AzADServicePrincipal -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		2	1	Unassigned_Variable	Get-AzADServicePrincipal -ApplicationId $id is a null-valued parameter value.	-ApplicationId	Assign value for $id.
⚠️		1	1	Unassigned_Variable	Remove-AzADSpCredential -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Remove-AzADSpCredential -KeyId $keyid is a null-valued parameter value.	-KeyId	Assign value for $keyid.
⚠️		2	1	Unassigned_Variable	Get-AzADServicePrincipal -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Remove-AzADUser -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		2	1	Unassigned_Variable	Get-AzADUser -UserPrincipalName $id is a null-valued parameter value.	-UserPrincipalName	Assign value for $id.
⚠️		1	1	Unassigned_Variable	Update-AzADApplication -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Update-AzADApplication -HomePage $homepage is a null-valued parameter value.	-HomePage	Assign value for $homepage.
⚠️		2	1	Unassigned_Variable	Get-AzADApplication -ObjectId $id is a null-valued parameter value.	-ObjectId	Assign value for $id.
⚠️		2	1	Unassigned_Variable	Update-AzADApplication -ReplyUrl $replyurl is a null-valued parameter value.	-ReplyUrl	Assign value for $replyurl.
⚠️		1	1	Unassigned_Variable	Update-AzADGroup -ObjectId $objectid is a null-valued parameter value.	-ObjectId	Assign value for $objectid.
⚠️		1	1	Unassigned_Variable	Update-AzADGroup -Description $description is a null-valued parameter value.	-Description	Assign value for $description.
⚠️		1	1	Unassigned_Variable	Update-AzADServicePrincipal -DisplayName $name is a null-valued parameter value.	-DisplayName	Assign value for $name.
⚠️		1	1	Unassigned_Variable	Update-AzADServicePrincipal -IdentifierUri $uri is a null-valued parameter value.	-IdentifierUri	Assign value for $uri.
⚠️		2	1	Unassigned_Variable	Get-AzADServicePrincipal -ObjectId $id is a null-valued parameter value.	-ObjectId	Assign value for $id.
⚠️		2	1	Unassigned_Variable	Update-AzADServicePrincipal -Note $note is a null-valued parameter value.	-Note	Assign value for $note.
⚠️		1	1	Unassigned_Variable	Update-AzADUser -UPNOrObjectId $upn is a null-valued parameter value.	-UPNOrObjectId	Assign value for $upn.
⚠️		1	1	Unassigned_Variable	Update-AzADUser -City $city is a null-valued parameter value.	-City	Assign value for $city.

️✔️Help File Existence Check

️✔️PowerShell Core - Windows

⚠️File Change Check

⚠️PowerShell Core - Windows

Type	Cmdlet	Description	Remediation
⚠️		It is required to update ChangeLog.md if you want to release a new version for Az.Resources.	Add a changelog record under Upcoming Release section with past tense.

️✔️UX Metadata Check

️✔️PowerShell Core - Windows

⚠️Test

⚠️ - Linux

Type	Title	Current Coverage	Description
⚠️	Test Coverage Less Than 50%	0.00 %	Test coverage for the module cannot be lower than 50%.

⚠️ - MacOS

Type	Title	Current Coverage	Description
⚠️	Test Coverage Less Than 50%	0.00%	Test coverage for the module cannot be lower than 50%.

⚠️PowerShell Core - Windows

Type	Title	Current Coverage	Description
⚠️	Test Coverage Less Than 50%	0.00%	Test coverage for the module cannot be lower than 50%.

[dolauli]

LGTM