internal/functions/ConvertTo-Alert.ps1

function ConvertTo-Alert {
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory, Position=0, ValueFromPipeline)]
        [ValidateNotNullOrEmpty()]
        [pscustomobject]$SL1Entity
    )

    Process {
        $SL1Entity | Add-Member -TypeName 'alert'
        $SL1Entity
    }
}