$wfProxy = Get-SPWorkflowServiceApplicationProxy
$wfProxy.GetWorkflowServiceAddress((Get-SPSite -Limit 1 -WarningAction SilentlyContinue))
$wfProxy = Get-SPWorkflowServiceApplicationProxy
$wfProxy.GetWorkflowServiceAddress((Get-SPSite -Limit 1 -WarningAction SilentlyContinue))