Format-Checklist : Cannot bind parameter 'Date' to the target. Exception setting "Date": "Cannot convert null to type
"System.DateTime"."
At line:25 char:1
+ Format-Checklist -RequirementEvent $output   # fails
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : WriteError: (:) [Format-Checklist], ParameterBindingException
    + FullyQualifiedErrorId : ParameterBindingFailed,Format-Checklist

$mySystem = [collections.generic.list[int]]::new()

$requirements = @(
    @{
        Name     = "Resource 1"
        Describe = "Resource 1 is present in the system"
        Test     = { $mySystem -contains 1 }
        Set      = { $mySystem.Add(1) | Out-Null; Start-Sleep 1 }
    },
    @{
        Name     = "Resource 2"
        Describe = "Resource 2 is present in the system"
        Test     = { $mySystem -contains 2 }
        Set      = { $mySystem.Add(2) | Out-Null; Start-Sleep 1 }
    }
)

$output = $requirements | Invoke-Requirement

$output | Format-Table | Out-Host            # works
Format-Table -InputObject $output | Out-Host # works

$output | Format-Checklist | Out-Host        # works
Format-Checklist -RequirementEvent $output   # fails