Validates a given input string and checks string is a valid GUID

Test-Guid.ps1

function Test-Guid
{
    <#
    .SYNOPSIS
    Validates a given input string and checks string is a valid GUID
    .DESCRIPTION
    Validates a given input string and checks string is a valid GUID by using the .NET method Guid.TryParse
    .EXAMPLE
    Test-Guid -InputObject "3363e9e1-00d8-45a1-9c0c-b93ee03f8c13"
    .NOTES
    Uses .NET method [guid]::TryParse()
    #>
    [Cmdletbinding()]
    [OutputType([bool])]
	param
	(
        [Parameter(Mandatory = $true, Position = 0, ValueFromPipelineByPropertyName = $true)]
        [AllowEmptyString()]
		[string]$InputObject
	)
    process{
        return [guid]::TryParse($InputObject, $([ref][guid]::Empty))
    }
}