Example Usage:
 # Load the library from the current directory.
 . .\NetApp.Management.System.ps1

 $filer = New-NaServer -server "TOASTER" -credentials (Get-Credential)

 # Set the OnTAPI version to use with the API
 $filer.Version = Get-NaSystemOnTAPIVersion -server $filer

 Get-NaSystemVersion -server $filer
 Get-NaSystemInfo -server $filer