function Get-FunctionWriteProgressHelperCalls {
    param (
        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [string]$FunctionName
    )

    $commandDefinition = (Show-CommandDefinition $FunctionName)
    return ([System.Management.Automation.PsParser]::Tokenize($commandDefinition, [ref]$null) | where { $_.Type -eq 'Command' -and $_.Content -eq 'Write-ProgressHelper' }).Count
}