Enumerate user groups

Get-UserGroups.ps1

Function Get-UserGroups {
<#
.EXAMPLE
PS C:\> Get-UserGroups -GroupName "Domain Admins"

.EXAMPLE
PS C:\> [bool](Get-UserGroups -GroupName "Domain")

.EXAMPLE
PS C:\> Get-UserGroups -UserName elliot.alderson@e-corp-usa.com
#>
[CmdletBinding()]
    param(
        [Parameter(HelpMessage="Group name to search for")]
        [string]$GroupName,
        [Parameter(HelpMessage="User name to search for; other than the currently logged-in user")]
        [string]$UserName = "$env:Username@$env:UserDNSDomain"
    )
	$ErrorActionPreference = "Stop"
	$UserGroupArr = New-Object System.Collections.ArrayList #Initialize the ArrayList
	Try {
	$UserClaims = [Security.Principal.WindowsIdentity]::New($UserName).Claims | Select-Object -First 1
	}
	Catch [System.Security.SecurityException] {
        Write-Error "$($_.Exception.Message)"
	}
	ForEach ($Claim in @($UserClaims.Subject.Groups)){
		$UserGroupObjProperties = @{
			"GroupName"	= $Claim.Translate([System.Security.Principal.NTAccount]).Value
			"SID"		= $Claim.Value
		}
		$UserGroupObj = New-Object PSObject -Property $UserGroupObjProperties
		[void]$UserGroupArr.Add($UserGroupObj)
	}
	$UserGroupArr -match $GroupName
}