powershell cmdlet (delphi.net)

[Remko]

I ran into some more questions:
What does this do (is it some kind of try..finally construction?) and how to convert it?

Code:

using (pipeLine)

On this line:

Code:

 if (pipeLine.Error != null && pipeLine.Error.Count > 0)

I get an error on pl.Error.Count (again Syntax Highlighting shows the count property but Ide marks it as undeclared identifier).