PowerShell cmdLet Get-TypeData

PS> $sif = get-typeData System.IO.FileInfo
PS> $sif.members

Key         Value
---         -----
Mode        System.Management.Automation.Runspaces.CodePropertyData
VersionInfo System.Management.Automation.Runspaces.ScriptPropertyData
BaseName    System.Management.Automation.Runspaces.ScriptPropertyData
Target      System.Management.Automation.Runspaces.CodePropertyData
LinkType    System.Management.Automation.Runspaces.CodePropertyData

PS> $sif.members['BaseName'].GetScriptBlock
if ($this.Extension.Length -gt 0){$this.Name.Remove($this.Name.Length - $this.Extension.Length)}else{$this.Name}

$fi = [System.IO.FileInfo] 'P:/ath/to/a/file.txt'
$fi.psExtended