Using Get-LocalGroupMember on remote server

Since Powershell 5 it has been possible to use Get-LocalGroupMember to retrieve members of local groups (ie. Administrators and Remote Desktop Users). It works smooth when I am on the server, but I can't figure out how to use it agains a remote server.

The best thing would be if it was possible to do like this:
Get-LocalGroupMember Administrators -Server webserver001

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Do I really have to use PSSession and would that work?
Kasper KatzmannSeniorkonsulentAsked:
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Michael PfisterCommented:
You can use this script instead:

You may have to rename the function in the script so ist not interfering with the built in Get-LocalGroupMember
Save this as Get-LocalGroupMemberAdsi.ps1 or Whatever.ps1:
Param (
	[string]$ComputerName = $ENV:ComputerName
	Try {
		If ([ADSI]::Exists("WinNT://$($ComputerName)/$($Group),group")) {
			([ADSI]"WinNT://$($ComputerName)/$($Group),group").Members() | ForEach-Object {
				$PathElements = ($_.GetType().InvokeMember("AdsPath", 'GetProperty', $null, $_, $null)).Split('/',[StringSplitOptions]::RemoveEmptyEntries)
				If ($PathElements[-2] -eq 'WinNT:') {
				} Else {
		} Else {
			"Group '$($Group)' not found on $($ComputerName)!" | Write-Error
	} Catch {
		$_.Exception.Message | Write-Error

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Luc FrankenEMEA Server EngineerCommented:
Or, maybe as simple as this will be good enough for you?
Invoke-command -computername webserver001 -scriptblock {Get-LocalGroupMember Administrators}

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