functions/certificates/Get-NavServicesCertificateThumbprint.ps1

function Get-NavServicesCertificateThumbprint {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [string]$ServerInstance
    )
    # TODO Test if -KeyName parameter is available and fallback to Xml to support older versions
    $thumbprint = Get-NAVServerConfiguration -ServerInstance $ServerInstance -KeyName ServicesCertificateThumbprint
    if ([string]::IsNullOrWhiteSpace($thumbprint)) {
        return $false
    } else {
        return $thumbprint
    }
}