Cleanup class after method?

[JN]

Imagine I have a very short-lived class:

void print(File f)
{
     PrinterManager pm = new PrinterManager();
     pm.print(f);
}

My understanding is that PrinterManager will be GC allocated, and 
when it goes out of scope, the GC will possibly clean it up at 
some point in the future. But I know that this class won't be 
used anywhere, I want to clean it up right now so that GC doesn't 
waste time later. In C++ it'd be handled by RAII, pm would be a 
unique_ptr<PrinterManager>. How to do it in D?