How to stop casting error from populating `$Error` in Powershell?

i have the following code:

function Test-PendingReboot {
    try {
        $util = [wmiclass]'\.\root\ccm\clientsdk:CCM_ClientUtilities'
        $status = $util.DetermineIfRebootPending()
        if (($null -ne $status) -and $status.RebootPending) {
            return $true
        }
    } catch {}
    return $false
}

which is part of a function that, as you can see, checks if a system reboot is pending.

That casting to [wmiclass] is possible only when a reboot is pending.

The function works correctly, but with the side effect of the casting error (when a reboot is not pending) going into the $Error automatic variable. You can check with:

$error.clear()
Test-PendingReboot
$error

This will print the following (False is just the return value of the call):

False

Cannot convert value "\.\root\ccm\clientsdk:CCM_ClientUtilities" to type "System.Management.ManagementClass". Error: "Invalid parameter "
At C:\_\t.ps1:26 char:89
+ … re'; return ([wmiclass]'\.\root\ccm\clientsdk:CCM_ClientUtilities') } …
+               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : InvalidArgument: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvalidCastToWMIClass

I don't want that.
I want to have complete control over the error, as the error itself is also part of the logic of the function (because it means that a reboot is certainly not pending).
I want to control it as when using -ErrorAction ignore instead of silentlycontinue with a cmdlet.

I tried using the following:

$ErrorActionPreference = 'ignore'
$util = [wmiclass]'\.\root\ccm\clientsdk:CCM_ClientUtilities'

or even the following (yes that's mad):

$ErrorActionPreference = 'ignore'
$util = Invoke-Command -ScriptBlock { $ErrorActionPreference = 'ignore'; return ([wmiclass]'\.\root\ccm\clientsdk:CCM_ClientUtilities') } -ea Ignore

but nothing works...

I'm starting to doubt, Is it even possible?

PLEASE NOTE: this piece of code is just an example, my question is, in general, how to stop casting error from getting into $Error?

thanks

You might consider to redirect the (error) stream:

function Test-PendingReboot {
    $util = & { [wmiclass]'\.\root\ccm\clientsdk:CCM_ClientUtilities' } *>&1
    $util.ForEach{
        if ($_ -is [System.Management.Automation.ErrorRecord]) {
            "Your error: $_"
        }
        else {
            $status = $_.DetermineIfRebootPending()
            if ($null -ne $status) { $status.RebootPending }
        }
    }
}

To completely intercept the error, you might consider to start an expensive and cumbersome new PowerShell session:

$Result = PowerShell {
    $util = & { [wmiclass]'\.\root\ccm\clientsdk:CCM_ClientUtilities' } *>&1
    $util.ForEach{
        if ($_ -is [System.Management.Automation.ErrorRecord]) {
            "Your error: $_"
        }
        else {
            $status = $_.DetermineIfRebootPending()
            if ($null -ne $status) { $status.RebootPending }
        }
    }
}

This never has an exception as long as sccm client is installed (get-package 'configuration manager client'):

# or Invoke-WmiMethod
$myargs = @{ namespace = 'root\ccm\clientsdk'
             class = 'CCM_ClientUtilities'
             name = 'DetermineIfRebootPending' }
Invoke-CimMethod @myargs | select RebootPending

RebootPending
-------------
False